diff --git a/sha1_name.c b/sha1_name.c
index 5fe8e5d4bf25d79c3fa76610d1617ee07c1f1e2c..f567454d22ada41b1565f26e7136e62b70769dfa 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
int status, is_null;
static char hex[41];
- is_null = !memcmp(sha1, null_sha1, 20);
+ is_null = is_null_sha1(sha1);
memcpy(hex, sha1_to_hex(sha1), 40);
- if (len == 40)
+ if (len == 40 || !len)
return hex;
while (len < 40) {
unsigned char sha1_ret[20];