Allocate a new empty number dictionary when resetting elements

test/mjsunit/regress/regress-reset-dictionary-elements.js

Index: test/mjsunit/regress/regress-reset-dictionary-elements.js
diff --git a/test/mjsunit/regress/regress-347530.js b/test/mjsunit/regress/regress-reset-dictionary-elements.js
similarity index 56%
copy from test/mjsunit/regress/regress-347530.js
copy to test/mjsunit/regress/regress-reset-dictionary-elements.js
index 330fda38c01b5b3c8cc3926fda0520b086aa7289..d3d093ec09c0f75afe85e1e34d0154bc90bf0748 100644
--- a/test/mjsunit/regress/regress-347530.js
+++ b/test/mjsunit/regress/regress-reset-dictionary-elements.js
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-gc
-a = [];
-a[1000] = .1;
+var a = [];
+a[10000] = 1;
 a.length = 0;
-gc();
-gc();
-a[1000] = .1;
-assertEquals(.1, a[1000]);
+a[1] = 1;
+a.length = 0;
+assertEquals(undefined, a[1]);
+
+var o = {};
+Object.freeze(o);
+assertEquals(undefined, o[1]);