[WIN32K][GDI32] Add debugbreaks

Author: tkreuzer

win32ss/gdi/ntgdi/gdibatch.c

@@ -116,6 +116,7 @@ GdiFlushUserBatch(PDC dc, PGDIBATCHHDR pHdr)
      case GdiBCSelObj:
      {
         PGDIBSOBJECT pgO;
+        __debugbreak();
 
         if (!dc) break;
         pgO = (PGDIBSOBJECT) pHdr;