isl_set_coalesce: add missing return

diff --git a/isl_coalesce.c b/isl_coalesce.c
index 4abd217..6f9c82e 100644 (file)
--- a/isl_coalesce.c
+++ b/isl_coalesce.c
@@ -618,5 +618,5 @@ error:
  */
 struct isl_set *isl_set_coalesce(struct isl_set *set)
 {
-       (struct isl_set *)isl_map_coalesce((struct isl_map *)set);
+       return (struct isl_set *)isl_map_coalesce((struct isl_map *)set);
 }