[PATCH xf86-video-mga] remove redundant NULL checks for free() v2

[Nicolas Kaiser]

* Ian Romanick <idr at freedesktop.org>:
> On 05/29/2011 02:47 AM, Nicolas Kaiser wrote:
> > Based on a suggestion from Cyril Brulebois.
> > free() can handle NULL.
> > 
> > Signed-off-by: Nicolas Kaiser <nikai at nikai.net>  
> 
> Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
> 
> A assume at this point you're mostly waiting for someone with commit
> rights to push your patches?

Thanks! That would be great.

Best regards,
Nicolas Kaiser