partial fix for #414, nSM message for dcall should show correct target

lib/runtime/dart/_operations.js

 // Copyright (c) 2015, 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.
 
 /* This library defines runtime operations on objects used by the code
  * generator.
  */
 dart_library.library('dart/_operations', null, /* Imports */[
 ], /* Lazy Imports */[
   'dart/_utils',
@@ skipping 85 matching lines @@
     }
     return true;
   }
 
   function throwNoSuchMethod(obj, name, args, opt_func) {
     if (obj === void 0) obj = opt_func;
     errors.throwNoSuchMethod(obj, name, args);
   }
 
   function checkAndCall(f, ftype, obj, args, name) {
+    let originalFunction = f;
     if (!(f instanceof Function)) {
       // We're not a function (and hence not a method either)
       // Grab the `call` method if it's not a function.
       if (f != null) {
         ftype = classes.getMethodType(f, 'call');
         f = f.call;
       }
       if (!(f instanceof Function)) {
-        throwNoSuchMethod(obj, name, args);
+        throwNoSuchMethod(obj, name, args, originalFunction);
       }
     }
     // If f is a function, but not a method (no method type)
     // then it should have been a function valued field, so
     // get the type from the function.
     if (ftype === void 0) {
       ftype = rtti.read(f);
     }
 
     if (!ftype) {
       // TODO(leafp): Allow JS objects to go through?
       // This includes the DOM.
       return f.apply(obj, args);
     }
 
     if (checkApply(ftype, args)) {
       return f.apply(obj, args);
     }
 
     // TODO(leafp): throw a type error (rather than NSM)
     // if the arity matches but the types are wrong.
-    throwNoSuchMethod(obj, name, args, f);
+    throwNoSuchMethod(obj, name, args, originalFunction);
   }
 
   function dcall(f, ...args) {
     let ftype = rtti.read(f);
     return checkAndCall(f, ftype, void 0, args, 'call');
   }
   exports.dcall = dcall;
 
   /** Shared code for dsend, dindex, and dsetindex. */
   function callMethod(obj, name, args, displayName) {
@@ skipping 310 matching lines @@
     next() {
       let i = this.dartIterator;
       let done = !i.moveNext();
       return { done: done, value: done ? void 0 : i.current };
     }
   }
   exports.JsIterator = JsIterator;
 
 
 });