(svn r16391) -Codechange: use Train instead of Vehicle where appropriate.

src/vehicle_base.h

@@ -46,7 +46,7 @@ enum VehicleFlags {
 
 struct VehicleRail {
 	/* Link between the two ends of a multiheaded engine */
-	Vehicle *other_multiheaded_part;
+	Train *other_multiheaded_part;
 
 	/* Cached wagon override spritegroup */
 	const struct SpriteGroup *cached_override;