[sleepy.penguin] [PATCH] util: minor cleanup to favor rb_io_get_io

[Eric Wong <normalperson@yhbt.net>]

This makes our code slightly smaller on Ruby 1.9+
---
 ext/sleepy_penguin/extconf.rb | 1 +
 ext/sleepy_penguin/util.c     | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/ext/sleepy_penguin/extconf.rb b/ext/sleepy_penguin/extconf.rb
index 0e6977a..3a6152b 100644
--- a/ext/sleepy_penguin/extconf.rb
+++ b/ext/sleepy_penguin/extconf.rb
@@ -25,4 +25,5 @@
 have_func('rb_thread_fd_close')
 have_func('rb_update_max_fd')
 have_func('rb_fd_fix_cloexec')
+have_func('rb_io_get_io')
 create_makefile('sleepy_penguin_ext')
diff --git a/ext/sleepy_penguin/util.c b/ext/sleepy_penguin/util.c
index 717a099..9d2123f 100644
--- a/ext/sleepy_penguin/util.c
+++ b/ext/sleepy_penguin/util.c
@@ -100,7 +100,7 @@ int rb_sp_io_closed(VALUE io)
 	case T_FILE:
 		break;
 	default:
-		io = rb_convert_type(io, T_FILE, "IO", "to_io");
+		io = rb_io_get_io(io);
 	}
 
 	return my_rb_io_closed(io);
@@ -110,7 +110,7 @@ int rb_sp_fileno(VALUE io)
 {
 	rb_io_t *fptr;
 
-	io = rb_convert_type(io, T_FILE, "IO", "to_io");
+	io = rb_io_get_io(io);
 	GetOpenFile(io, fptr);
 	return FPTR_TO_FD(fptr);
 }
-- 
1.8.3.2.701.g8c4e4ec