Bug 531580 - ""gtk_clipboard_get_for_display: assertion `!display->closed' failed" after closing browser" [r=karlt]

widget/src/gtk2/nsClipboard.cpp

@@ -126,6 +126,14 @@ nsClipboard::nsClipboard()
 
 nsClipboard::~nsClipboard()
 {
+    // We have to clear clipboard before gdk_display_close() call.
+    // See bug 531580 for details.
+    if (mGlobalTransferable) {
+        gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
+    }
+    if (mSelectionTransferable) {
+        gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_PRIMARY));
+    }
 }
 
 NS_IMPL_ISUPPORTS1(nsClipboard, nsIClipboard)