[PATCH] Remove superfluous if(p!=NULL) checks around free(p); p=NULL;

[Jonathan Morton]

On Wed, 2010-11-10 at 10:57 -0500, Matt Turner wrote:
> I'm not so sure about this. Do you know for sure that nothing depends
> on setting the value of the freed pointer to NULL or 0 afterwards?

If the pointer is already NULL, surely setting it to NULL again is not a
problem?

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From: Jonathan Morton
      jonathan.morton at movial.com