[dovecot/core] 9bea32: lib: uri_parser_init*() - initialize allow_pct_nul

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 9bea325875d114ff90529cc8f1e8ff89fc4fe700
      https://github.com/dovecot/core/commit/9bea325875d114ff90529cc8f1e8ff89fc4fe700
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2017-09-15 (Fri, 15 Sep 2017)

  Changed paths:
    M src/lib/uri-util.c

  Log Message:
  -----------
  lib: uri_parser_init*() - initialize allow_pct_nul

Unless the caller explicitly cleared the parser's memory, allow_pct_nul was
somewhat random. All the code in Dovecot core did this, but some plugins
didn't.