Add ToObject call in Array.prototype.sort

src/array.js

Index: src/array.js
diff --git a/src/array.js b/src/array.js
index 309871f6f95a7811537d1be6132e6afe7fea1be3..69f0910cee58b4ec09545a59fc941c8d4382fd9f 100644
--- a/src/array.js
+++ b/src/array.js
@@ -1176,8 +1176,9 @@ function InnerArraySort(length, comparefn) {
 function ArraySort(comparefn) {
   CHECK_OBJECT_COERCIBLE(this, "Array.prototype.sort");
 
-  var length = TO_UINT32(this.length);
-  return %_CallFunction(this, length, comparefn, InnerArraySort);
+  var array = $toObject(this);
+  var length = TO_UINT32(array.length);
+  return %_CallFunction(array, length, comparefn, InnerArraySort);
 }