gets speed up patch

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/v1_1r@114 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.h b/io.h
index ddb49961dc..0c1820dd68 100644
--- a/io.h
+++ b/io.h
@@ -34,7 +34,7 @@ typedef struct OpenFile {
 #define FMODE_BINMODE   4
 #define FMODE_SYNC      8
 
-#define GetOpenFile(obj,fp) ((fp) = RFILE(obj)->fptr)
+#define GetOpenFile(obj,fp) io_check_closed((fp) = RFILE(obj)->fptr)
 
 #define MakeOpenFile(obj, fp) do {\
     fp = RFILE(obj)->fptr = ALLOC(OpenFile);\