(svn r16525) -Codechange: Notify small ufos on deletion of road vehicles, so they can head for somewhere else instead of stumbling over a ghost.

src/saveload/afterload.cpp

@@ -1841,6 +1841,19 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (CheckSavegameVersion(121)) {
+		/* Delete small ufos heading for non-existing vehicles */
+		Vehicle *v;
+		FOR_ALL_DISASTERVEHICLES(v) {
+			if (v->subtype == 2/*ST_SMALL_UFO*/ && v->current_order.GetDestination() != 0) {
+				const Vehicle *u = Vehicle::GetIfValid(v->dest_tile);
+				if (u == NULL || u->type != VEH_ROAD || !IsRoadVehFront(u)) {
+					delete v;
+				}
+			}
+		}
+	}
+
 	AfterLoadLabelMaps();
 
 	GamelogPrintDebug(1);