fixes #616, statics on callable functions

test/codegen_expected/language/function_subtype_call1_test.js

Index: test/codegen_expected/language/function_subtype_call1_test.js
diff --git a/test/codegen_expected/language/function_subtype_call1_test.js b/test/codegen_expected/language/function_subtype_call1_test.js
index d73e52c4d4d1e411efd23065c517edfd4df8fe65..7176e0f2d984788b0e8b7bb5c9f3585a635283a7 100644
--- a/test/codegen_expected/language/function_subtype_call1_test.js
+++ b/test/codegen_expected/language/function_subtype_call1_test.js
@@ -21,9 +21,8 @@ dart_library.library('language/function_subtype_call1_test', null, /* Imports */
   function_subtype_call1_test.Boz = dart.typedef('Boz', () => dart.functionType(dart.void, [core.bool]));
   function_subtype_call1_test.C1$ = dart.generic(T => {
     const C1 = dart.callableClass(function C1(...args) {
-      const self = this;
       function call(...args) {
-        return self.call.apply(self, args);
+        return call.call.apply(call, args);
       }
       call.__proto__ = this.__proto__;
       call.new.apply(call, args);
@@ -43,9 +42,8 @@ dart_library.library('language/function_subtype_call1_test', null, /* Imports */
   function_subtype_call1_test.C1 = C1();
   function_subtype_call1_test.C2$ = dart.generic(T => {
     const C2 = dart.callableClass(function C2(...args) {
-      const self = this;
       function call(...args) {
-        return self.call.apply(self, args);
+        return call.call.apply(call, args);
       }
       call.__proto__ = this.__proto__;
       call.new.apply(call, args);