fixup! fshack: winex11: Support opengl scaling according to fake reso…

…lution.

NULL get_win_data() may happen if the window is from the other process.

CW-Bug-Id: #22950

dlls/winex11.drv/opengl.c

@@ -1530,10 +1530,12 @@ static struct gl_drawable *create_gl_drawable( HWND hwnd, const struct wgl_pixel
         gl->window = create_client_window( hwnd, visual );
         if (gl->window)
             gl->drawable = pglXCreateWindow( gdi_display, gl->format->fbconfig, gl->window, NULL );
-        data = get_win_data( hwnd );
-        gl->fs_hack = data->fs_hack || fs_hack_get_gamma_ramp( NULL );
-        if (gl->fs_hack) TRACE( "Window %p has the fullscreen hack enabled\n", hwnd );
-        release_win_data( data );
+        if ((data = get_win_data( hwnd )))
+        {
+            gl->fs_hack = data->fs_hack || fs_hack_get_gamma_ramp( NULL );
+            if (gl->fs_hack) TRACE( "Window %p has the fullscreen hack enabled\n", hwnd );
+            release_win_data( data );
+        }
         TRACE( "%p created client %lx drawable %lx\n", hwnd, gl->window, gl->drawable );
     }
 #ifdef SONAME_LIBXCOMPOSITE