From 01d334f81b8b3d29c034d559f93339a274efb199 Mon Sep 17 00:00:00 2001
From: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Date: Thu, 20 May 2021 10:40:39 -0400
Subject: Fix a crash on incomplete/missing threads

Properly handle situation where we can get a None as well as an empty
message list.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
---
 b4/mbox.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'b4/mbox.py')

diff --git a/b4/mbox.py b/b4/mbox.py
index 850558f..724e956 100644
--- a/b4/mbox.py
+++ b/b4/mbox.py
@@ -501,7 +501,7 @@ def main(cmdargs):
             sys.exit(1)
 
         msgs = b4.get_pi_thread_by_msgid(msgid, useproject=cmdargs.useproject, nocache=cmdargs.nocache)
-        if not len(msgs):
+        if not msgs:
             return
     else:
         if cmdargs.localmbox == '-':
-- 
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