Give a better error message if dotlock is deleted immediately under us (or more likely an OS bug).
Give a better error message if dotlock is deleted immediately under us (or
more likely an OS bug).

Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,damoxc/dovecot,Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot