FvwmPager bugfix - Redraw pager grid if CurrentMonitor set.

If current monitor is set, then desk changes would not redraw the
monitor locations. This fixes that by ensuring the desk grids are
redrawn in this case.

modules/FvwmPager/FvwmPager.c

@@ -1039,7 +1039,15 @@ void list_new_desk(unsigned long *body)
 		mout != current_monitor->m &&
 		(monitor_mode == MONITOR_TRACKING_M ||
 			is_tracking_shared))))
+  {
+	  /* Still need to update monitor location for other monitors. */
+	  if (current_monitor != NULL && oldDesk != newDesk) {
+		  MovePage(true);
+		  DrawGrid(oldDesk - desk1, None, NULL);
+		  DrawGrid(newDesk - desk1, None, NULL);
+	  }
 	  return;
+  }
 
   /* Update the icon window to always track current desk. */
   desk_i = fp->m->virtual_scr.CurrentDesk;