Remove an unneeded layer of macro indirection.

main.c

@@ -1276,7 +1276,7 @@ static bool do_command(void) {
 					    (OBJECT_IS_NOTFOUND(i) ||
 					     OBJECT_IS_STASHED(i))) {
 						game.objects[i].prop =
-						    OBJECT_STASHED(i);
+						    PROP_STASHIFY(game.objects[i].prop);
 					}
 				}
 			}