refs.c: commit_packed_refs to return a meaningful errno on failure

diff --git a/refs.h b/refs.h
index 8d6cac717b31b4eed237c3c417476fd8458873de..e588ff842f8fa80b52ea79a60290350cd355e059 100644 (file)
--- a/refs.h
+++ b/refs.h
@@ -98,6 +98,7 @@ extern void add_packed_ref(const char *refname, const unsigned char *sha1);
  * Write the current version of the packed refs cache from memory to
  * disk.  The packed-refs file must already be locked for writing (see
  * lock_packed_refs()).  Return zero on success.
+ * Sets errno to something meaningful on error.
  */
 extern int commit_packed_refs(void);