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From: Marek Lindner <lindner_marek@yahoo.de>
Date: Thu, 4 Mar 2010 23:35:09 +0800
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Subject: Re: [B.A.T.M.A.N.] no need to check for NULL before calling free()
	(was: [PATCH v2] batctl: avoid parsing bat-hosts multiple times)
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On Thursday 04 March 2010 23:09:05 Marek Lindner wrote:
> I added a small check add the end of the patch to make sure that we don't
> attempt to free a NULL pointer.

Sven just informed me that this is not necessary - free() also accepts a NULL 
pointer. Shockingly I was not aware of that. It seems I'm not the only one 
since even manpages do it wrong (e.g. man 3 getline).  :-)

Cheers,
Marek