mail_index_ext_reset() and mail_index_ext_set_reset_id() need to clear ext header updates and resizes. mail_index_ext_set_reset_id() also needs to clear ext resets.
mail_index_ext_reset() and mail_index_ext_set_reset_id() need to clear
ext header updates and resizes. mail_index_ext_set_reset_id() also needs to
clear ext resets.

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