get_oid_hex_segment(): return 0 on success

Nobody cares about the return value of get_oid_hex_segment() except to
check whether it failed. So just return 0 on success.

And while we're updating its docstring, update it for some argument
renaming that happened a while ago.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 7 insertions, 8 deletions

diff --git a/notes.c b/notes.c
index 8bca18edbb..930ae3a0d7 100644
--- a/notes.c
+++ b/notes.c
@@ -338,11 +338,10 @@ static void note_tree_free(struct int_node *tree)
  * Convert a partial SHA1 hex string to the corresponding partial SHA1 value.
  * - hex      - Partial SHA1 segment in ASCII hex format
  * - hex_len  - Length of above segment. Must be multiple of 2 between 0 and 40
- * - sha1     - Partial SHA1 value is written here
- * - sha1_len - Max #bytes to store in sha1, Must be >= hex_len / 2, and < 20
- * Returns -1 on error (invalid arguments or invalid SHA1 (not in hex format)).
- * Otherwise, returns number of bytes written to sha1 (i.e. hex_len / 2).
- * Pads sha1 with NULs up to sha1_len (not included in returned length).
+ * - oid      - Partial SHA1 value is written here
+ * - oid_len  - Max #bytes to store in sha1, Must be >= hex_len / 2, and < 20
+ * Return 0 on success or -1 on error (invalid arguments or input not
+ * in hex format). Pad oid with NULs up to oid_len.
  */
 static int get_oid_hex_segment(const char *hex, unsigned int hex_len,
 		unsigned char *oid, unsigned int oid_len)
@@ -359,7 +358,7 @@ static int get_oid_hex_segment(const char *hex, unsigned int hex_len,
 	}
 	for (; i < oid_len; i++)
 		*oid++ = 0;
-	return len;
+	return 0;
 }
 
 static int non_note_cmp(const struct non_note *a, const struct non_note *b)
@@ -444,7 +443,7 @@ static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
 
 			if (get_oid_hex_segment(entry.path, path_len,
 						object_oid.hash + prefix_len,
-						GIT_SHA1_RAWSZ - prefix_len) < 0)
+						GIT_SHA1_RAWSZ - prefix_len))
 				goto handle_non_note; /* entry.path is not a SHA1 */
 
 			type = PTR_TYPE_NOTE;
@@ -461,7 +460,7 @@ static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
 
 			if (get_oid_hex_segment(entry.path, 2,
 						object_oid.hash + prefix_len,
-						GIT_SHA1_RAWSZ - prefix_len) < 0)
+						GIT_SHA1_RAWSZ - prefix_len))
 				goto handle_non_note; /* entry.path is not a SHA1 */
 
 			type = PTR_TYPE_SUBTREE;