Extension closures test fixed

idea/testData/codegen/classes/extensionClosure.jet

@@ -1,11 +1,13 @@
+class Point(val x : Int, val y : Int)
+
 fun box() : String {
-    val answer = apply("OK", { String.() : Int =>
-        length
+    val answer = apply(Point(3, 5), { Point.(scalar : Int) : Point =>
+        Point(x * scalar, y * scalar)
     })
 
-    return if (answer == 2) "OK" else "FAIL"
+    return if (answer.x == 6 && answer.y == 10) "OK" else "FAIL"
 }
 
-fun apply(arg:String, f : {String.() : Int}) : Int {
-    return arg.f()
+fun apply(arg:Point, f : {Point.(scalar : Int) : Point}) : Point {
+    return arg.f(2)
 }