sha1_to_hex: properly terminate the SHA1

sha1_to_hex() returns a pointer to a static buffer. Some of its users
modify that buffer by appending a newline character. Other users rely
on the fact that you can call

	printf("%s", sha1_to_hex(sha1));

Just to be on the safe side, terminate the SHA1 in sha1_to_hex().

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/sha1_file.c b/sha1_file.c
index 601147351..d451a94ef 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -81,6 +81,8 @@ char * sha1_to_hex(const unsigned char *sha1)
 		*buf++ = hex[val >> 4];
 		*buf++ = hex[val & 0xf];
 	}
+	*buf = '\0';
+
 	return buffer;
 }