get_expanded_map(): avoid memory leak

The old code could leak *expn_name if match_name_with_pattern()
succeeded but ignore_symref_update() returned true.  So make sure that
*expn_name is freed in any case.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/remote.c b/remote.c
index bef81cdb6c7c38ae6a7a43bd47c7ccc6f985eec1..a83dc90318d61a2fb94b2bf1572fbce3e8fd15f4 100644 (file)
--- a/remote.c
+++ b/remote.c
@@ -1567,9 +1567,9 @@ static struct ref *get_expanded_map(const struct ref *remote_refs,
        struct ref *ret = NULL;
        struct ref **tail = &ret;
 
-       char *expn_name;
-
        for (ref = remote_refs; ref; ref = ref->next) {
+               char *expn_name = NULL;
+
                if (strchr(ref->name, '^'))
                        continue; /* a dereference item */
                if (match_name_with_pattern(refspec->src, ref->name,
@@ -1578,12 +1578,12 @@ static struct ref *get_expanded_map(const struct ref *remote_refs,
                        struct ref *cpy = copy_ref(ref);
 
                        cpy->peer_ref = alloc_ref(expn_name);
-                       free(expn_name);
                        if (refspec->force)
                                cpy->peer_ref->force = 1;
                        *tail = cpy;
                        tail = &cpy->next;
                }
+               free(expn_name);
        }
 
        return ret;