[PATCH] sha1-file: release strbuf after use

[René Scharfe]

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

The plugged leak was added by a10a17877b (for_each_alternate_ref:
replace transport code with for-each-ref, 2017-02-08) and showed up in
709dfa6990 (object-store.h: move for_each_alternate_ref() from
transport.h, 2019-07-01), where it caught my eye, belatedly.

 sha1-file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sha1-file.c b/sha1-file.c
index 84fd02f107..487ea35d2d 100644
--- a/sha1-file.c
+++ b/sha1-file.c
@@ -773,32 +773,33 @@ static void fill_alternate_refs_command(struct 
child_process *cmd,
 static void read_alternate_refs(const char *path,
                                alternate_ref_fn *cb,
                                void *data)
 {
        struct child_process cmd = CHILD_PROCESS_INIT;
        struct strbuf line = STRBUF_INIT;
        FILE *fh;

        fill_alternate_refs_command(&cmd, path);

        if (start_command(&cmd))
                return;

        fh = xfdopen(cmd.out, "r");
        while (strbuf_getline_lf(&line, fh) != EOF) {
                struct object_id oid;
                const char *p;

                if (parse_oid_hex(line.buf, &oid, &p) || *p) {
                        warning(_("invalid line while parsing alternate refs: 
%s"),
                                line.buf);
                        break;
                }

                cb(&oid, data);
        }

        fclose(fh);
        finish_command(&cmd);
+       strbuf_release(&line);
 }

 struct alternate_refs_data {
--
2.22.0