fix windows after r18847

src/x64/code-stubs-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5294 matching lines @@
   __ Set(StackSpaceOperand(3), 0);
 
 #if defined(__MINGW64__) || defined(_WIN64)
   Register arguments_arg = rcx;
   Register callback_arg = rdx;
 #else
   Register arguments_arg = rdi;
   Register callback_arg = rsi;
 #endif
 
-  // It's okay if callback_arg == api_function_address
+  // It's okay if api_function_address == callback_arg
   // but not arguments_arg
   ASSERT(!api_function_address.is(arguments_arg));
 
   // v8::InvocationCallback's argument.
   __ lea(arguments_arg, StackSpaceOperand(0));
 
   Address thunk_address = FUNCTION_ADDR(&InvokeFunctionCallback);
 
   StackArgumentsAccessor args_from_rbp(rbp, FCA::kArgsLength,
                                        ARGUMENTS_DONT_CONTAIN_RECEIVER);
   Operand context_restore_operand = args_from_rbp.GetArgumentOperand(
       FCA::kArgsLength - 1 - FCA::kContextSaveIndex);
   Operand return_value_operand = args_from_rbp.GetArgumentOperand(
       FCA::kArgsLength - 1 - FCA::kReturnValueOffset);
   __ CallApiFunctionAndReturn(
       api_function_address,
       thunk_address,
       callback_arg,
       argc + FCA::kArgsLength + 1,
       return_value_operand,
       restore_context ? &context_restore_operand : NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64