[gnome-commander] Null check, part 2

[Uwe Scholz <uwescholz src gnome org>]

commit 32f79832bdd18efe35b16a117fe6eec89ae6c1fe
Author: Uwe Scholz <u scholz83 gmx de>
Date:   Wed Nov 10 22:52:20 2021 +0100

    Null check, part 2

 src/gnome-cmd-con.cc | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/gnome-cmd-con.cc b/src/gnome-cmd-con.cc
index 427e27fe..4204996a 100644
--- a/src/gnome-cmd-con.cc
+++ b/src/gnome-cmd-con.cc
@@ -455,6 +455,8 @@ void gnome_cmd_con_add_bookmark (GnomeCmdCon *con, gchar *name, gchar *path)
 
 void gnome_cmd_con_erase_bookmark (GnomeCmdCon *con)
 {
+    if (!con)
+        return;
     g_return_if_fail (GNOME_CMD_IS_CON (con));
 
     GnomeCmdBookmarkGroup *group = con->priv->bookmarks;