[PATCH] dir-iterator: release strbuf after use

["René Scharfe" <l.s.r@web.de>]

Signed-off-by: René Scharfe <l.s.r@web.de>
---
Patch generated with --function-context for easier review.

The plugged leak was added after v2.22.0 (2019-06-07) by 3012397e03
(dir-iterator: refactor state machine model, 2019-07-10).

 refs/files-backend.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/refs/files-backend.c b/refs/files-backend.c
index b1f8f53a09..d60767ab73 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -2143,24 +2143,26 @@ static struct ref_iterator_vtable files_reflog_iterator_vtable = {
 static struct ref_iterator *reflog_iterator_begin(struct ref_store *ref_store,
 						  const char *gitdir)
 {
 	struct dir_iterator *diter;
 	struct files_reflog_iterator *iter;
 	struct ref_iterator *ref_iterator;
 	struct strbuf sb = STRBUF_INIT;

 	strbuf_addf(&sb, "%s/logs", gitdir);

 	diter = dir_iterator_begin(sb.buf, 0);
-	if(!diter)
+	if (!diter) {
+		strbuf_release(&sb);
 		return empty_ref_iterator_begin();
+	}

 	iter = xcalloc(1, sizeof(*iter));
 	ref_iterator = &iter->base;

 	base_ref_iterator_init(ref_iterator, &files_reflog_iterator_vtable, 0);
 	iter->dir_iterator = diter;
 	iter->ref_store = ref_store;
 	strbuf_release(&sb);

 	return ref_iterator;
 }
--
2.22.0