imap-parser: Allow calling imap_parser_read_args() multiple times with larger count parameter.
imap-parser: Allow calling imap_parser_read_args() multiple times with larger count parameter.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot