From b6d5ce7975667cc32d7d86a992d5206627e5ff73 Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 8 Mar 2015 13:52:51 +0000
Subject: * ext/zlib/zlib.c (rb_gzfile_close): Don't raise on double   close
 for consistent to IO#close.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49893 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/zlib/zlib.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'ext')

diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 8f24b77d8f..9c2b7b624f 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -3297,9 +3297,13 @@ rb_gzfile_set_comment(VALUE obj, VALUE str)
 static VALUE
 rb_gzfile_close(VALUE obj)
 {
-    struct gzfile *gz = get_gzfile(obj);
+    struct gzfile *gz;
     VALUE io;
 
+    TypedData_Get_Struct(obj, struct gzfile, &gzfile_data_type, gz);
+    if (!ZSTREAM_IS_READY(&gz->z)) {
+        return Qnil;
+    }
     io = gz->io;
     gzfile_close(gz, 1);
     return io;
-- 
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