(harmless) warning fix for VC++

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7898 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/gsocket.c

@@ -97,7 +97,7 @@ GSocket *GSocket_new(void)
   if (!success)
   {
     free(socket);
-    return NULL;
+    socket = NULL;
   }
 
   return socket;