transport.c::transport_push(): make ref status affect return value

Use push_had_errors() to check the refs for errors and modify the
return value.

Mark the non-fast-forward push tests to succeed.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5541-http-push.sh

@@ -88,7 +88,7 @@ test_expect_success 'used receive-pack service' '
 	test_cmp exp act
 '
 
-test_expect_failure 'non-fast-forward push fails' '
+test_expect_success 'non-fast-forward push fails' '
 	cd "$ROOT_PATH"/test_repo_clone &&
 	git checkout master &&
 	echo "changed" > path2 &&
@@ -104,7 +104,7 @@ test_expect_success 'non-fast-forward push show ref status' '
 	grep "^ ! \[rejected\][ ]*master -> master (non-fast-forward)$" output
 '
 
-test_expect_failure 'non-fast-forward push shows help message' '
+test_expect_success 'non-fast-forward push shows help message' '
 	grep \
 "To prevent you from losing history, non-fast-forward updates were rejected
 Merge the remote changes before pushing again.  See the '"'non-fast-forward'"'

transport.c

@@ -875,7 +875,7 @@ int transport_push(struct transport *transport,
 		int verbose = flags & TRANSPORT_PUSH_VERBOSE;
 		int quiet = flags & TRANSPORT_PUSH_QUIET;
 		int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
-		int ret;
+		int ret, err;
 
 		if (flags & TRANSPORT_PUSH_ALL)
 			match_flags |= MATCH_REFS_ALL;
@@ -892,8 +892,11 @@ int transport_push(struct transport *transport,
 			flags & TRANSPORT_PUSH_FORCE);
 
 		ret = transport->push_refs(transport, remote_refs, flags);
+		err = push_had_errors(remote_refs);
+
+		ret |= err;
 
-		if (!quiet || push_had_errors(remote_refs))
+		if (!quiet || err)
 			print_push_status(transport->url, remote_refs,
 					verbose | porcelain, porcelain,
 					nonfastforward);