auth: Fixed crash when using %{passdb:} or %{userdb:} functions when escape_func was NULL Patch by Michael Slusarz.
auth: Fixed crash when using %{passdb:} or %{userdb:} functions when escape_func was NULL
Patch by Michael Slusarz.

dscho/dovecot,dscho/dovecot,dscho/dovecot,dscho/dovecot,dscho/dovecot