(svn r9797) -Feature: [NewGRF] Add action 1, 2 and 3 support for canals.

src/newgrf_spritegroup.h

@@ -182,6 +182,9 @@ struct ResolverObject {
 			const struct Vehicle *parent;
 			EngineID self_type;
 		} vehicle;
+		struct {
+			TileIndex tile;
+		} canal;
 		struct {
 			TileIndex tile;
 			const struct Station *st;