check-mail was triggered to run at startup after a Done:FetchHeaders
message. This message would only occur if there were messages in the
default folder. In the case where there are no messages, check-mail
would not run at startup as intended. Run check-mail even if there are
no messages found in the default folder at startup.
Fixes: https://todo.sr.ht/~rjarry/aerc/60
Reported-by: ~foutrelis
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>