dir.c: encoding check
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39413 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
dir.c: encoding check
and string do not match, instead of exception. [ruby-dev:47069]
[Bug #7911]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39413 b2dd03c8-39d4-4d8f-98ff-823fe69b080e