[Bug 36636] valgrind shows an uninitialized write in shell32/tests/appbar.c

http://bugs.winehq.org/show_bug.cgi?id=36636

--- Comment #8 from Bruno Jesus  ---
(In reply to Nikolay Sivov from comment #7)
> That's too much, you only need to set command.abd.cbSize. Same applies for
> two other cases - it's better to add what's missing, instead of memset and
> immediately overwrite it.

Thanks for the review, I will send an updated version.