call Show(false) from ~wxDialog to call EndModal if the dialog is still modal consistently in all ports

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51562 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/motif/dialog.cpp

@@ -183,6 +183,9 @@ wxDialog::~wxDialog()
 {
     m_isBeingDeleted = true;
 
+    // if the dialog is modal, this will end its event loop
+    Show(false);
+
     delete m_eventLoop;
 
     if (m_mainWidget)
@@ -241,6 +244,9 @@ bool wxDialog::Show( bool show )
     if( !wxWindowBase::Show( show ) )
         return false;
 
+    if ( !show && IsModal() )
+        EndModal(wxID_CANCEL);
+
     m_isShown = show;
 
     if (show)