refs.c: add an err argument to repack_without_refs

Update repack_without_refs to take an err argument and update it if there
is a failure. Pass the err variable from ref_transaction_commit to this
function so that callers can print a meaningful error message if _commit
fails due to this function.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/refs.h b/refs.h
index 64f25d9..65f7637 100644
--- a/refs.h
+++ b/refs.h
@@ -122,7 +122,8 @@ extern void rollback_packed_refs(void);
  */
 int pack_refs(unsigned int flags);
 
-extern int repack_without_refs(const char **refnames, int n);
+extern int repack_without_refs(const char **refnames, int n,
+			       struct strbuf *err);
 
 extern int ref_exists(const char *);