Make read_in_full() and write_in_full() consistent with xread() and xwrite()

xread() and xwrite() return ssize_t values as their native POSIX
counterparts read(2) and write(2).

To be consistent, read_in_full() and write_in_full() should also return
ssize_t values.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/refs.c b/refs.c
index 1b0050eee4..4db73ed8f0 100644
--- a/refs.c
+++ b/refs.c
@@ -368,7 +368,8 @@ int resolve_gitlink_ref(const char *path, const char *refname, unsigned char *re
 
 const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag)
 {
-	int depth = MAXDEPTH, len;
+	int depth = MAXDEPTH;
+	ssize_t len;
 	char buffer[256];
 	static char ref_buffer[256];