Bug 983053 - Don't suppress-deleted-elements on an object that's not in the middle of iteration. r=jorendorff

--HG--
extra : rebase_source : 3cd83274ff2050c864411ddf81ff9e74b0a8dfbe

js/src/jsarray.cpp

@@ -2444,10 +2444,6 @@ array_splice(JSContext *cx, unsigned argc, Value *vp)
 
             /* Steps 12(c)-(d). */
             obj->shrinkElements(cx, finalLength);
-
-            /* Fix running enumerators for the deleted items. */
-            if (!js_SuppressDeletedElements(cx, obj, finalLength, len))
-                return false;
         } else {
             /*
              * This is all very slow if the length is very large. We don't yet