Merge branch 'jc/t1517-more' into jk/imap-send-plug-all-msgs-leak

* jc/t1517-more:
  imap-send: minimum leakfix
  t1517: more coverage for commands that work without repository

imap-send.c

@@ -1555,6 +1555,7 @@ int cmd_main(int argc, const char **argv)
 	}
 
 	if (all_msgs.len == 0) {
+		strbuf_release(&all_msgs);
 		fprintf(stderr, "nothing to send\n");
 		ret = 1;
 		goto out;