transport_git: add missed error handling

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>

src/transport_git.c

@@ -151,6 +151,8 @@ static int do_connect(transport_git *t, const char *url)
 		url += STRLEN(prefix);
 
 	error = extract_host_and_port(&host, &port, url);
+	if (error < GIT_SUCCESS)
+		return error;
 	s = gitno_connect(host, port);
 	connected = 1;
 	error = send_request(s, NULL, url);