fix for keymaps unregister error

space_view3d_copy_attributes.py

@@ -780,7 +780,7 @@ def unregister():
                 if kmi.properties.name == 'MESH_MT_CopyFaceSettings':
                     km.keymap_items.remove(kmi)
 
-        km = kc.addon.keymaps['Object Mode']
+        km = kc.keymaps['Object Mode']
         for kmi in km.keymap_items:
             if kmi.idname == 'wm.call_menu':
                 if kmi.properties.name == 'VIEW3D_MT_copypopup':

space_view3d_spacebar_menu.py

@@ -1405,7 +1405,7 @@ def unregister():
     wm = bpy.context.window_manager
     kc = wm.keyconfigs.addon
     if kc:
-        km = kc.addon.keymaps['3D View']
+        km = kc.keymaps['3D View']
         for kmi in km.keymap_items:
             if kmi.idname == 'wm.call_menu':
                 if kmi.properties.name == "VIEW3D_MT_Space_Dynamic_Menu":