[BUG_FIXED] Fix DocMap's syntax highlighting doesn't update while current doc apply a new syntax highlighting.

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@1266 f5eea248-9336-0410-98b8-ebc06183d4e3

PowerEditor/src/NppCommands.cpp

@@ -2322,6 +2322,10 @@ void Notepad_plus::command(int id)
 		case IDM_LANG_USER :
 		{
             setLanguage(menuID2LangType(id));
+			if (_pDocMap)
+			{
+				_pDocMap->setSyntaxHiliting();
+			}
 		}
         break;