Fix error message when assigning to a local const variable

runtime/vm/parser.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
@@ skipping 8997 matching lines @@
                                       const String &ident,
                                       AstNode** node) {
   TRACE_PARSER("ResolveIdentInLocalScope");
   // First try to find the identifier in the nested local scopes.
   LocalVariable* local = LookupLocalScope(ident);
   if (current_block_ != NULL) {
     current_block_->scope->AddReferencedName(ident_pos, ident);
   }
   if (local != NULL) {
     if (node != NULL) {
-      if (local->IsConst()) {
-        *node = new LiteralNode(ident_pos, *local->ConstValue());
-      } else {
-        *node = new LoadLocalNode(ident_pos, local);
-      }
+      *node = new LoadLocalNode(ident_pos, local);
     }
     return true;
   }
 
   // Try to find the identifier in the class scope of the current class.
   // If the current class is the result of a mixin application, we must
   // use the class scope of the class from which the function originates.
   Class& cls = Class::Handle(isolate());
   if (!current_class().IsMixinApplication()) {
     cls = current_class().raw();
@@ skipping 1756 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart