coccinelle cleanups for pkg

[Baptiste Daroussin]

On Wed, Apr 20, 2016 at 05:04:35PM -0500, Pedro Giffuni wrote:
> Hello;
> 
> Playing a bit with coccinelle, it found some minor cosmetic issues in
> pkg. Just some extra semicolons and one place where NULLs should be
> used instead of zero.
> 
> Regards,
> 
> Pedro.

Thank you!

diff.c and merge3.c is a contributed code I try to not touch it too much (from fossil SCM).

FYI we do use coccinelle as well in pkg :)

We have a make cocci target that runs a log of various coccinelle files :)

Best regards,
Bapt
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