Deinitialize pending command only if it's actually executing. Fixes crash if client disconnected while command was only half sent.
Deinitialize pending command only if it's actually executing. Fixes crash if
client disconnected while command was only half sent.

damoxc/dovecot,LTD-Beget/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,damoxc/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,damoxc/dovecot,Distrotech/dovecot