Linus,

> If you do conversions after the merge window, make them DAMN OBVIOUS.
> Make them minimal, make them automated, and DO NOT DO OTHER RANDOM
> CRAP AROUND THEM.

Okay, I don't want to do annoying things, so let me rephrase what I got
out of this. I should have 2 cleanup patches, one for the callback
changes and one for the whitespace changes?

Because I think the whitespace patch is needed. This is still the
beginning of a larger refactoring and having struct members initialized
according to coding style will greatly simplify next steps. And this
paragraph should then be the commit message of the whitespace patch.

I assumed that it was obvious that everything in this pull request was
automated. I honestly really don't enjoy pushing whitespaces around
manually.

   Wolfram