From a6ea84487977dec4c291d92220a87756e9a1675f Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Wed, 27 Mar 2019 11:32:23 +0100
Subject: Check against null pointer for security

---
 src/Fl_Screen_Driver.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Fl_Screen_Driver.cxx b/src/Fl_Screen_Driver.cxx
index c5a118e30..43dbc144d 100644
--- a/src/Fl_Screen_Driver.cxx
+++ b/src/Fl_Screen_Driver.cxx
@@ -383,7 +383,7 @@ void Fl_Screen_Driver::transient_scale_display(float f, int nscreen)
   win_and_widget *data = new win_and_widget;
   data->win = win;
   data->widget = Fl::focus();
-  if (data->widget->top_window()->user_data() == &transient_scale_display) {
+  if (data->widget && data->widget->top_window()->user_data() == &transient_scale_display) {
     data->widget = 0;
   }
   win->show();
-- 
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