[PATCH] memzone: remove unnecessary null checks

[Morten Brørup]

> From: Stephen Hemminger [mailto:stephen at networkplumber.org]
> 
> The function rte_memzone_free() already checks if the argument
> is NULL. Add it to the coccinelle fix script and correct
> all the existing code.
> 
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> ---

Acked-by: Morten Brørup <mb at smartsharesystems.com>