[PATCH 2/4] lock_ref_sha1_basic: simplify errno handling

[Jeff King <peff@peff.net>]

Now that error() does not clobber errno, we do not have to
take pains to save it ourselves.

Signed-off-by: Jeff King <peff@peff.net>
---
 refs.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/refs.c b/refs.c
index 5ff457e..169a46d 100644
--- a/refs.c
+++ b/refs.c
@@ -2232,7 +2232,6 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 	char *ref_file;
 	const char *orig_refname = refname;
 	struct ref_lock *lock;
-	int last_errno = 0;
 	int type, lflags;
 	int mustexist = (old_sha1 && !is_null_sha1(old_sha1));
 	int resolve_flags = 0;
@@ -2260,7 +2259,6 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 		 */
 		ref_file = git_path("%s", orig_refname);
 		if (remove_empty_directories(ref_file)) {
-			last_errno = errno;
 			error("there are still refs under '%s'", orig_refname);
 			goto error_return;
 		}
@@ -2270,7 +2268,6 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 	if (type_p)
 	    *type_p = type;
 	if (!refname) {
-		last_errno = errno;
 		error("unable to resolve reference %s: %s",
 			orig_refname, strerror(errno));
 		goto error_return;
@@ -2283,7 +2280,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 	 */
 	if (missing &&
 	     !is_refname_available(refname, skip, get_packed_refs(&ref_cache))) {
-		last_errno = ENOTDIR;
+		errno = ENOTDIR;
 		goto error_return;
 	}
 
@@ -2311,7 +2308,6 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 			goto retry;
 		/* fall through */
 	default:
-		last_errno = errno;
 		error("unable to create directory for %s", ref_file);
 		goto error_return;
 	}
@@ -2332,7 +2328,6 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 
  error_return:
 	unlock_ref(lock);
-	errno = last_errno;
 	return NULL;
 }
 
-- 
2.1.2.596.g7379948