Since r76202 InsertMenuItem is used when adding checkable menu items even
without a bitmap. The call fails because hbmpChecked and hbmpUnchecked are
set to HBMMENU_CALLBACK on pre-Vista, making the menu owner drawn
unnecessarily.
Fix by adding GetHBitmapForMenuCheckable which is used when assigning
values to hbmpChecked and hbmpUnchecked. GetHBitmapForMenu remains
unchanged (for possible porting reasons) and is used for hBmpItem only.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76757 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
6b12639c49