(svn r6614) -Fix: added check to see if a newly opened refit window is different from NULL before assigning data to it

vehicle_gui.c

@@ -432,7 +432,10 @@ void ShowVehicleRefitWindow(const Vehicle *v)
 	DeleteWindowById(WC_VEHICLE_REFIT, v->index);
 
 	_alloc_wnd_parent_num = v->index;
+
 	w = AllocateWindowDesc(&_vehicle_refit_desc);
+
+	if (w != NULL) {
 		w->window_number = v->index;
 		w->caption_color = v->owner;
 		w->vscroll.cap = 8;
@@ -461,6 +464,7 @@ void ShowVehicleRefitWindow(const Vehicle *v)
 				break;
 			default: NOT_REACHED();
 		}
+	}
 }
 
 /* Display additional text from NewGRF in the purchase information window */