Fixed: Use new fast msgSend function for some foundation classes

Foundation/CPArray/_CPJavaScriptArray.j

@@ -196,8 +196,10 @@ var concat = Array.prototype.concat,
     }
 
     else
-        for (; index < count; ++index)
-            objj_msgSend(self[index], aSelector);
+        for (; index < count; ++index) {
+            var receiver = self[index];
+            receiver == nil ? nil : receiver.isa.objj_msgSend0(receiver, aSelector);
+        }
 }
 
 - (CPArray)arrayByAddingObject:(id)anObject