array.c: swap volatile for RB_GC_GUARD

* array.c (ary_recycle_hash): add RB_GC_GUARD
  (rb_ary_diff): remove volatile
  [Bug #10369]

The RB_GC_GUARD seems needed for most of the ary_recycle_hash
functions anyways.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47896 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Mon Oct 13 06:52:09 2014  Eric Wong  <e@80x24.org>
+
+	* array.c (ary_recycle_hash): add RB_GC_GUARD
+	  (rb_ary_diff): remove volatile
+	  [Bug #10369]
+
 Mon Oct 13 03:20:23 2014  Zachary Scott  <e@zzak.io>
 
 	* ext/date/date_core.c: [DOC] Clean up whitespace, examples, and typos

array.c

@@ -3986,6 +3986,7 @@ ary_recycle_hash(VALUE hash)
 	RHASH(hash)->ntbl = 0;
 	st_free_table(tbl);
     }
+    RB_GC_GUARD(hash);
 }
 
 /*
@@ -4009,7 +4010,7 @@ static VALUE
 rb_ary_diff(VALUE ary1, VALUE ary2)
 {
     VALUE ary3;
-    volatile VALUE hash;
+    VALUE hash;
     long i;
 
     hash = ary_make_hash(to_ary(ary2));