(svn r13816) -Fix [FS#2150]: check for vehicle length changes outside a depot (callback 0x11) and give a warning about that

src/train.h

@@ -271,6 +271,7 @@ byte FreightWagonMult(CargoID cargo);
 int CheckTrainInDepot(const Vehicle *v, bool needs_to_be_stopped);
 int CheckTrainStoppedInDepot(const Vehicle *v);
 void UpdateTrainAcceleration(Vehicle* v);
+void CheckTrainsLengths();
 
 /**
  * This class 'wraps' Vehicle; you do not actually instantiate this class.