comctl32: Fix propsheet size calculation

[Vitaliy Margolen]

Vitaliy Margolen wrote:
> Size of tabs has nothing to do with the size of a window title.
> Fixes bug 8522.
> ---
>  dlls/comctl32/propsheet.c |   17 ++++++++++++++---
>  1 files changed, 14 insertions(+), 3 deletions(-)
> 

Was there anything wrong with this patch? Adding tests for this won't work
all that well - size of non-client varies from distro to distro to WM to
user settings.

Vitaliy