dir.c, io.c: use rb_id_encoding

* dir.c (dir_initialize): rb_id_encoding() returns same ID with
  caching.

* io.c (Init_IO): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53012 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/dir.c b/dir.c
index 71696149d7..0311bf0cce 100644
--- a/dir.c
+++ b/dir.c
@@ -491,7 +491,7 @@ dir_initialize(int argc, VALUE *argv, VALUE dir)
     const char *path;
 
     if (!keyword_ids[0]) {
-	keyword_ids[0] = rb_intern("encoding");
+	keyword_ids[0] = rb_id_encoding();
     }
 
     fsenc = rb_filesystem_encoding();