Fix for bug 1229: Unary operator plus is not allowed ... except for literals.

runtime/vm/ast.cc

 // 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.
 
 #include "vm/ast.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
 #include "vm/object_store.h"
 
@@ skipping 228 matching lines @@
       return NULL;
     default:
       UNREACHABLE();
       return NULL;
   }
   return NULL;
 }
 
 
 AstNode* UnaryOpNode::UnaryOpOrLiteral(intptr_t token_index,
-                                           Token::Kind kind,
-                                           AstNode* operand) {
+                                       Token::Kind kind,
+                                       AstNode* operand) {
   AstNode* new_operand = operand->ApplyUnaryOp(kind);
   if (new_operand != NULL) {
     return new_operand;
   }
   return new UnaryOpNode(token_index, kind, operand);
 }
 
 
 bool UnaryOpNode::IsKindValid() const {
   switch (kind_) {
@@ skipping 184 matching lines @@
   if (field_value.IsUnhandledException()) {
     return NULL;
   }
   if (!field_value.IsNull()) {
     return &field_value;
   }
   return NULL;
 }
 
 }  // namespace dart