(svn r8605) -Codechange: [OSX] changed all objective C to objective C++
This will permanently solve the issue where compilation on OSX broke because C++ code was added to some header files

-Note: (important if you develop mac specific code)
taken from http://developer.apple.com/releasenotes/Cocoa/Objective-C++.html
gdb lacks an integrated C++ with Objective-C parser. This means that gdb won't be able to evaluate expressions that contain both C++ and Objective-C constructs.
gdb assumes that the language for ".mm" files is C++.
you can change it to objective C by typing: (gdb) set language objc
Mixing C++ and objective C has some limitation (see link for all of them)

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/* $Id$ */

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#include "../stdafx.h"

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#include "../openttd.h"

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#include "null_s.h"

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static const char *NullSoundStart(const char * const *parm) { return NULL; }

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static void NullSoundStop(void) {}

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const HalSoundDriver _null_sound_driver = {

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	NullSoundStart,

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	NullSoundStop,

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};