[network-manager-applet] editor: fix a crash when editing a virtual connection

[Jiří Klimeš <jklimes src gnome org>]

commit 915dc47b2d55e788e6661d0fb6522bddbf6e89fa
Author: Jiří Klimeš <jklimes redhat com>
Date:   Mon Mar 9 15:43:43 2015 +0100

    editor: fix a crash when editing a virtual connection
    
    Test case:
    1. run nm-connection-editor
    2. click "Add" button
    3. select "Bridge" in combo box and click "Create..." button
    4. delete the text in "Interface name:" entry
    5. click "Add" button to add a slave
    6. click "Create..." button
    7. *** crash ***

 src/connection-editor/page-master.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/connection-editor/page-master.c b/src/connection-editor/page-master.c
index 1b2b775..abf6fb3 100644
--- a/src/connection-editor/page-master.c
+++ b/src/connection-editor/page-master.c
@@ -370,7 +370,7 @@ add_connection (NMConnection *connection,
        iface_name = gtk_entry_get_text (priv->interface_name);
        if (!*iface_name)
                iface_name = nm_connection_get_interface_name (connection);
-       if (!*iface_name)
+       if (!iface_name || !nm_utils_iface_valid_name (iface_name))
                iface_name = nm_connection_get_id (connection);
        name = g_strdup_printf (_("%s slave %d"), iface_name,
                                gtk_tree_model_iter_n_children (priv->connections_model, NULL) + 1);