stringio.c: don't raise after close

* ext/stringio/stringio.c (strio_close): don't raise on dobule
  close for consistent to IO#close.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49962 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 4 deletions

diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 78988e194e..ed141dda64 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -360,8 +360,8 @@ strio_close(VALUE self)
 static VALUE
 strio_close_read(VALUE self)
 {
-    StringIO(self);
-    if (!READABLE(self)) {
+    struct StringIO *ptr = StringIO(self);
+    if (!(ptr->flags & FMODE_READABLE)) {
 	rb_raise(rb_eIOError, "closing non-duplex IO for reading");
     }
     RBASIC(self)->flags &= ~STRIO_READABLE;
@@ -378,8 +378,8 @@ strio_close_read(VALUE self)
 static VALUE
 strio_close_write(VALUE self)
 {
-    StringIO(self);
-    if (!WRITABLE(self)) {
+    struct StringIO *ptr = StringIO(self);
+    if (!(ptr->flags & FMODE_WRITABLE)) {
 	rb_raise(rb_eIOError, "closing non-duplex IO for writing");
     }
     RBASIC(self)->flags &= ~STRIO_WRITABLE;