[PATCH 2/5] log-tree: rely upon the check in the gpg_interface

[Michael J Gruber <git@drmicha.warpmail.net>]

It's just so much betterer.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
---
 log-tree.c | 25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/log-tree.c b/log-tree.c
index 5dc45c4..912fe08 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -508,20 +508,17 @@ static void show_one_mergetag(struct rev_info *opt,
 	gpg_message_offset = verify_message.len;
 
 	payload_size = parse_signature(extra->value, extra->len);
-	if ((extra->len <= payload_size) ||
-	    (verify_signed_buffer(extra->value, payload_size,
-				  extra->value + payload_size,
-				  extra->len - payload_size,
-				  &verify_message) &&
-	     verify_message.len <= gpg_message_offset)) {
-		strbuf_addstr(&verify_message, "No signature\n");
-		status = -1;
-	}
-	else if (strstr(verify_message.buf + gpg_message_offset,
-			": Good signature from "))
-		status = 0;
-	else
-		status = -1;
+	status = -1;
+	if (extra->len > payload_size)
+		if (verify_signed_buffer(extra->value, payload_size,
+					 extra->value + payload_size,
+					 extra->len - payload_size,
+					 &verify_message)) {
+			if (verify_message.len <= gpg_message_offset)
+				strbuf_addstr(&verify_message, "No signature\n");
+			else
+				status = 0;
+		}
 
 	show_sig_lines(opt, status, verify_message.buf);
 	strbuf_release(&verify_message);
-- 
1.8.1.3.797.ge0260c7