bitset: fix memory leaks

Reported by Bruno Haible.
https://lists.gnu.org/archive/html/bug-gnulib/2019-03/msg00027.html

* lib/bitset/vector.c (vbitset_free): New.
(vbitset_vtable): Use it.

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/bitset/vector.c b/lib/bitset/vector.c
index 0623651dc4..54f148d568 100644
--- a/lib/bitset/vector.c
+++ b/lib/bitset/vector.c
@@ -928,6 +928,13 @@ vbitset_copy (bitset dst, bitset src)
 }
 
 
+static void
+vbitset_free (bitset bset)
+{
+  free (VBITSET_WORDS (bset));
+}
+
+
 /* Vector of operations for multiple word bitsets.  */
 struct bitset_vtable vbitset_vtable = {
   vbitset_set,
@@ -961,7 +968,7 @@ struct bitset_vtable vbitset_vtable = {
   vbitset_or_and_cmp,
   vbitset_list,
   vbitset_list_reverse,
-  NULL,
+  vbitset_free,
   BITSET_VECTOR
 };