Fix a double-free in the Gtk event log.

It could occur some time after a line was selected in the event log
window.

diff --git a/unix/gtkdlg.c b/unix/gtkdlg.c
index 3776df8c1998c50f20bf84b2c1cc35d37eefd1e4..8e1364bd349d8cc19379429b2d1f94a7f90aab1b 100644 (file)
--- a/unix/gtkdlg.c
+++ b/unix/gtkdlg.c
@@ -3550,6 +3550,7 @@ static void eventlog_destroy(GtkWidget *widget, gpointer data)
 
     es->window = NULL;
     sfree(es->seldata);
+    es->seldata = NULL;
     dlg_cleanup(&es->dp);
     ctrl_free_box(es->eventbox);
 }