Handle partial reroll of series without cover

A series may not have a cover letter, so properly handle that situation.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/b4/mbox.py b/b4/mbox.py
index de2cfc6..55b456a 100644
--- a/b4/mbox.py
+++ b/b4/mbox.py
@@ -577,6 +577,8 @@ def main(cmdargs):
                 if not len(msgs):
                     logger.critical('Could not find %s in %s', msgid, cmdargs.localmbox)
                     sys.exit(1)
+            else:
+                msgs = in_mbx
         else:
             logger.critical('Mailbox %s does not exist', cmdargs.localmbox)
             sys.exit(1)