Fixed the QUERY dialog so it would not crash on exit, and the COUNT button now works

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6368 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/db/dbtest.h

@@ -346,6 +346,7 @@ class CqueryDlg : public wxDialog
         wxTextCtrl                 *pFocusTxt;
 
         CqueryDlg(wxWindow *parent, wxDB *pDb, char *tblName[], char *pWhereArg);
+        ~CqueryDlg();
 
         void        OnButton( wxCommandEvent &event );
         void        OnCommand(wxWindow& win, wxCommandEvent& event);