hash.c: fix commit miss

* hash.c (HAS_EXTRA_STATES): remove extra parenthesis.
  [Bug #9275]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44360 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

hash.c

@@ -28,9 +28,9 @@
 #endif
 
 #define HAS_EXTRA_STATES(hash, klass) ( \
-    (klass = has_extra_methods(rb_obj_class(hash))) != 0 || \
-     FL_TEST((hash), FL_EXIVAR|FL_TAINT|HASH_PROC_DEFAULT) || \
-     !NIL_P(RHASH_IFNONE(hash))))
+    ((klass = has_extra_methods(rb_obj_class(hash))) != 0) || \
+    FL_TEST((hash), FL_EXIVAR|FL_TAINT|HASH_PROC_DEFAULT) || \
+    !NIL_P(RHASH_IFNONE(hash)))
 #define HASH_REJECT_COPY_EXTRA_STATES 1
 
 static VALUE