Issue 1287. Allow to invoke function literal.

tests/language/src/FunctionTest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Tests function statements and expressions.
 
 class Bug4089219 {
   int x;
   var f;
 
@@ skipping 286 matching lines @@
   void testFunctionDefaults2() {
     Expect.equals(10, helperFunctionDefaults2());
     Expect.equals(1, helperFunctionDefaults2(1));
   }
 
   num helperFunctionDefaults2([a = 10]) {
     return ((){return a;})();
   }
 
   void testEscapingFunctions() {
-    f() { return 42; }
+    f() { return 42; };
     (() { Expect.equals(42, f()); })();
     var o = new Bug4089219(42);
     Expect.equals(42, (o.f)());
   }
 
   void testThisBinding() {
     Expect.equals(this, () { return this; }());
   }
 }
 
@@ skipping 31 matching lines @@
     fooIntString = foo;
 
     uf = uf2;
     uf2 = uf;
   }
 }
 
 main() {
   FunctionTest.testMain();
 }