Note: Encode 3.15 has more comprehensive leak fix (it leaks on encoding, too, not just decoding).
Avoid 3.14, it segfaults and made 3.15 necessary. cf. http://nntp.perl.org/group/perl.perl5.porters/261689 <9fb18b82-1fa8-4e33-b7f2-507e9b35c...@dan.co.jp> Thanks.
