FIX: Fixed path hints in FindBoost.cmake

FindBoost.cmake

@@ -45,6 +45,8 @@ find_path(
 
 if(NOT BOOST_INCLUDEDIR)
     message(FATAL_ERROR "Boost include directory was not found! Please, set variable BOOST_INCLUDEDIR to the correct path.")
+else()
+    include_directories("${Boost_INCLUDE_DIRS}")
 endif()
 
 # Create a list of requested Boost libraries with "system" names
@@ -76,7 +78,6 @@ endif()
 
 # Set Boost_FOUND
 if(Boost_INCLUDE_DIRS AND Boost_LIBRARY_DIRS)
-    include_directories("${Boost_INCLUDE_DIRS}")
     set(Boost_FOUND TRUE)
 else()
     message(FATAL_ERROR "Boost library was NOT found!")