$OpenBSD: patch-db_tree_cc,v 1.2 2001/04/20 09:40:53 wilfried Exp $
--- db_tree.cc.orig	Wed Apr 11 21:12:19 2001
+++ db_tree.cc	Fri Apr 20 11:24:35 2001
@@ -36,8 +36,8 @@ extern void s_fl_alert (const char *fmt,
 
 class db_tree {
 vector<string> databases,tables,strings;
-	static void  close (Fl_Widget *w,void *p) { w->hide(); delete w;}
-	static void close_b (Fl_Return_Button *b,void *p) {Fl_Window *w = (Fl_Window *)p; w->hide(); delete w;}
+	static void  close (Fl_Widget *w,void *p) { w->hide(); delete w; w=0;}
+	static void close_b (Fl_Return_Button *b,void *p) {Fl_Window *w = (Fl_Window *)p; w->hide(); delete w; w=0;}
 	static void put_it(Fl_Widget* w,void* p){
 		Fl_Toggle_Tree* t=(Fl_Toggle_Tree*) w; if (Fl::event_key()!=65259) return;
 		if (!t->current()) return; if (sql_command->value()[0]) sql_command->insert(" ");
@@ -111,7 +111,7 @@ public:
 			return;
 		}
 		t->update_height(); w->resizable(t); 
-		w->show(); while (w->visible()) Fl::wait();
+		w->show(); while (w && w->visible()) Fl::wait();
 	}
 	~db_tree (void) {
 		databases.clear();tables.clear();strings.clear();