*: Add a hash_clean_and_free() function

Add a hash_clean_and_free() function as well as convert
the code to use it.  This function also takes a double
pointer to the hash to set it NULL.  Also it cleanly
does nothing if the pointer is NULL( as a bunch of
code tested for ).

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

1 files changed, 1 insertions, 5 deletions

diff --git a/lib/vrf.c b/lib/vrf.c
index a60f532f41..73f5d8ff72 100644
--- a/lib/vrf.c
+++ b/lib/vrf.c
@@ -394,11 +394,7 @@ void vrf_bitmap_free(vrf_bitmap_t bmap)
 {
 	struct hash *vrf_hash = bmap;
 
-	if (vrf_hash == NULL)
-		return;
-
-	hash_clean(vrf_hash, vrf_hash_bitmap_free);
-	hash_free(vrf_hash);
+	hash_clean_and_free(&vrf_hash, vrf_hash_bitmap_free);
 }
 
 void vrf_bitmap_set(vrf_bitmap_t bmap, vrf_id_t vrf_id)