(svn r17152) -Fix: A stuck train could free the reservation of another train if it was reversed or did crash.

src/water_cmd.cpp

@@ -805,7 +805,7 @@ static void FloodVehicle(Vehicle *v)
 						/* FreeTrainTrackReservation() calls GetVehicleTrackdir() that doesn't like crashed vehicles.
 						 * In this case, v->direction matches v->u.rail.track, so we can do this (it wasn't crashed before) */
 						t->vehstatus &= ~VS_CRASHED;
-						FreeTrainTrackReservation(t);
+						if (!HasBit(t->flags, VRF_TRAIN_STUCK)) FreeTrainTrackReservation(t);
 						t->vehstatus |= VS_CRASHED;
 					}
 					t->crash_anim_pos = 4000; // max 4440, disappear pretty fast