Fix T43116: Obj/mtl displace texture import error.

startswith('d') is too generic, matches 'disp' lines too...
So added space after expected keyword in all case.

io_scene_obj/import_obj.py

@@ -214,28 +214,28 @@ def create_materials(filepath, relpath,
                     # we need to make a material to assign properties to it.
                     line_split = line.split()
                     line_lower = line.lower().lstrip()
-                    if line_lower.startswith(b'ka'):
+                    if line_lower.startswith(b'ka '):
                         context_material.mirror_color = float_func(line_split[1]), float_func(line_split[2]), float_func(line_split[3])
-                    elif line_lower.startswith(b'kd'):
+                    elif line_lower.startswith(b'kd '):
                         context_material.diffuse_color = float_func(line_split[1]), float_func(line_split[2]), float_func(line_split[3])
-                    elif line_lower.startswith(b'ks'):
+                    elif line_lower.startswith(b'ks '):
                         context_material.specular_color = float_func(line_split[1]), float_func(line_split[2]), float_func(line_split[3])
-                    elif line_lower.startswith(b'ns'):
+                    elif line_lower.startswith(b'ns '):
                         context_material.specular_hardness = int((float_func(line_split[1]) * 0.51))
-                    elif line_lower.startswith(b'ni'):  # Refraction index
+                    elif line_lower.startswith(b'ni '):  # Refraction index
                         context_material.raytrace_transparency.ior = max(1, min(float_func(line_split[1]), 3))  # between 1 and 3
                         context_material_vars.add("ior")
-                    elif line_lower.startswith(b'd'):  # dissolve (trancparency)
+                    elif line_lower.startswith(b'd '):  # dissolve (trancparency)
                         context_material.alpha = float_func(line_split[1])
                         context_material.use_transparency = True
                         context_material.transparency_method = 'Z_TRANSPARENCY'
                         context_material_vars.add("alpha")
-                    elif line_lower.startswith(b'tr'):  # trancelucency
+                    elif line_lower.startswith(b'tr '):  # trancelucency
                         context_material.translucency = float_func(line_split[1])
-                    elif line_lower.startswith(b'tf'):
+                    elif line_lower.startswith(b'tf '):
                         # rgb, filter color, blender has no support for this.
                         pass
-                    elif line_lower.startswith(b'illum'):
+                    elif line_lower.startswith(b'illum '):
                         illum = int(line_split[1])
 
                         do_ambient = True
@@ -336,33 +336,33 @@ def create_materials(filepath, relpath,
                         # written when raytracing wasnt default, annoying to disable for blender users.
                         context_material.use_raytrace = True
 
-                    elif line_lower.startswith(b'map_ka'):
+                    elif line_lower.startswith(b'map_ka '):
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'Ka')
-                    elif line_lower.startswith(b'map_ks'):
+                    elif line_lower.startswith(b'map_ks '):
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'Ks')
-                    elif line_lower.startswith(b'map_kd'):
+                    elif line_lower.startswith(b'map_kd '):
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'Kd')
-                    elif line_lower.startswith((b'map_bump', b'bump')):  # 'bump' is incorrect but some files use it.
+                    elif line_lower.startswith((b'map_bump ', b'bump ')):  # 'bump' is incorrect but some files use it.
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'Bump')
-                    elif line_lower.startswith((b'map_d', b'map_tr')):  # Alpha map - Dissolve
+                    elif line_lower.startswith((b'map_d ', b'map_tr ')):  # Alpha map - Dissolve
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'D')
 
-                    elif line_lower.startswith((b'map_disp', b'disp')):  # reflectionmap
+                    elif line_lower.startswith((b'map_disp ', b'disp ')):  # displacementmap
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'disp')
 
-                    elif line_lower.startswith((b'map_refl', b'refl')):  # reflectionmap
+                    elif line_lower.startswith((b'map_refl ', b'refl ')):  # reflectionmap
                         img_filepath = line_value(line.split())
                         if img_filepath:
                             load_material_image(context_material, context_material_name, img_filepath, 'refl')