[media] s5p-mfc: Adjust a null pointer check in four functions

[SF Markus Elfring]

> Generating patch is only part of the story,

I can follow this view in principle.


> it seems the patch is not sent properly

I got an other impression.


> and tags which should be in SMTP header end up in the message body.

I agree that extra message fields were presented by the git software for
a reason.
You might have got other opinions about the original reason (than me).


> I think there would not be such issues if you have used git
> format-patch + git send-email.

I have got also doubts about your corresponding expectations when you
would find
the proposed commit message itself acceptable (besides the small source
code changes).


> I normally do amend things like this while applying,

That is interesting.


> I will do that this time as well.

Such an action can also be nice.


> It's already too much time wasted for such a dubious patch.

A bit of time is needed to resolve a temporary disagreement.

Regards,
Markus