Use wxDynamicCast() instead of IsKindOf() checks.

wxDynamicCast() is less verbose (due to the absence of "CLASSINFO") and more
compatible with the standard dynamic_cast<>, so prefer to use it when possible.

See #14356.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71624 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/combocmn.cpp

@@ -517,7 +517,7 @@ bool wxComboPopupWindow::ProcessLeftDown(wxMouseEvent& event)
 void wxComboPopupWindow::OnDismiss()
 {
     wxComboCtrlBase* combo = (wxComboCtrlBase*) GetParent();
-    wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxComboCtrlBase)),
+    wxASSERT_MSG( wxDynamicCast(combo, wxComboCtrlBase),
                   wxT("parent might not be wxComboCtrl, but check IMPLEMENT_DYNAMIC_CLASS(2) macro for correctness") );
 
     combo->OnPopupDismiss(true);