alloconly pool: pool_unref() shouldn't set the pool pointer to NULL unless refcount=0.
alloconly pool: pool_unref() shouldn't set the pool pointer to NULL unless
refcount=0.

--HG--
branch : HEAD

dscho/dovecot,jwm/dovecot-notmuch,dscho/dovecot,jkerihuel/dovecot,dscho/dovecot,jwm/dovecot-notmuch,dscho/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,dscho/dovecot,jkerihuel/dovecot,jkerihuel/dovecot