Fix completion value of empty catch block in the presence of destructuring.

test/mjsunit/harmony/destructuring.js

Index: test/mjsunit/harmony/destructuring.js
diff --git a/test/mjsunit/harmony/destructuring.js b/test/mjsunit/harmony/destructuring.js
index b6eb6eab09e8152047fb07de83ab7141e7e4392d..d058b8a77d2817fb593e69b20b2d6d03d340e023 100644
--- a/test/mjsunit/harmony/destructuring.js
+++ b/test/mjsunit/harmony/destructuring.js
@@ -1131,4 +1131,7 @@
   assertEquals("hello", foo);
   assertEquals("world", bar);
   assertEquals(42, baz);
+
+  assertEquals(undefined, eval('try {throw {foo: 1, bar: 2}} catch({foo}) {}'));
+  assertEquals(undefined, eval('try {throw [1, 2, 3]} catch([x]) {}'));
 })();