(svn r19587) -Fix: false positive in cache validity checking when a train crashes; the max curve speed depends on the 'angle' between wagons and with wagons spinning around randomly without updating the max curve speed cache that leads to "seeing" a difference. As the caches aren't useful for crashed vehicles anymore, just ignore those vehicles

src/openttd.cpp

@@ -1106,7 +1106,7 @@ static void CheckCaches()
 
 	Vehicle *v;
 	FOR_ALL_VEHICLES(v) {
-		if (v != v->First()) continue;
+		if (v != v->First() || v->vehstatus & VS_CRASHED) continue;
 
 		switch (v->type) {
 			case VEH_ROAD: {