[gtk+/wip/baedert/gtk-widget-destroy: 3/10] clipboard: Make sure we got a selection

[Timm Bäder <baedert src gnome org>]

commit 6b305af1f9e86ff616d2e23f723d70dd6c45747f
Author: Timm Bäder <mail baedert org>
Date:   Tue Sep 26 09:57:03 2017 +0200

    clipboard: Make sure we got a selection
    
    gdk_event_selection does not always fill the passed GdkAtom.

 gtk/gtkclipboard.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkclipboard.c b/gtk/gtkclipboard.c
index 329299e..417823c 100644
--- a/gtk/gtkclipboard.c
+++ b/gtk/gtkclipboard.c
@@ -2025,7 +2025,9 @@ _gtk_clipboard_handle_event (GdkEventOwnerChange *event)
   GdkAtom selection;
   GtkClipboard *clipboard;
   
-  gdk_event_get_selection ((GdkEvent *)event, &selection);
+  if (!gdk_event_get_selection ((GdkEvent *)event, &selection))
+    return;
+
   display = gdk_window_get_display (gdk_event_get_window ((GdkEvent *)event));
   clipboard = clipboard_peek (display, selection, TRUE);