VCL: make it more clear that this is a static function we are calling on

Change-Id: Ic7ac1a1bc3ac3901c844ee6e1c59a1518043f761

vcl/source/app/svapp.cxx

@@ -549,7 +549,7 @@ void Application::SetSettings( const AllSettings& rSettings )
             {
                 nOldDPIX = pFirstFrame->mnDPIX;
                 nOldDPIY = pFirstFrame->mnDPIY;
-                InitAppFontData();
+                Application::InitAppFontData();
             }
             Window* pFrame = pFirstFrame;
             while ( pFrame )