*_list_free: return NULL

[platform/upstream/isl.git] / isl_list_templ.c

diff --git a/isl_list_templ.c b/isl_list_templ.c
index 0bf8294..00f993d 100644 (file)
--- a/isl_list_templ.c
+++ b/isl_list_templ.c
@@ -85,20 +85,22 @@ error:
        return NULL;
 }
 
-void FN(LIST(EL),free)(__isl_take LIST(EL) *list)
+void *FN(LIST(EL),free)(__isl_take LIST(EL) *list)
 {
        int i;
 
        if (!list)
-               return;
+               return NULL;
 
        if (--list->ref > 0)
-               return;
+               return NULL;
 
        isl_ctx_deref(list->ctx);
        for (i = 0; i < list->n; ++i)
                FN(EL,free)(list->p[i]);
        free(list);
+
+       return NULL;
 }
 
 int FN(FN(LIST(EL),n),BASE)(__isl_keep LIST(EL) *list)