Fixed overlapping text and floating objects by simplifying the available rectangle calculation

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75362 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
update patcher to use C89 comments, also tag preprocessor's "__pragma"

Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>
use C89 comments

Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>