fixes MSW comparision where theme name extracted from the environment is in upper case

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15839 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/theme.cpp

@@ -64,7 +64,7 @@ wxThemeInfo::wxThemeInfo(Constructor c,
     wxThemeInfo *info = ms_allThemes;
     while ( info )
     {
-        if ( name == info->name )
+        if ( name.CmpNoCase(info->name) == 0 )
         {
             return info->ctor();
         }