[network-manager-applet] editor: fix invalid memory access when displaying service details

[Beniamino Galvani <bgalvani src gnome org>]

commit 7c080df78187614d03949e2eb9120f66eb1b3811
Author: Beniamino Galvani <bgalvani redhat com>
Date:   Mon Nov 7 16:18:40 2016 +0100

    editor: fix invalid memory access when displaying service details
    
    If the plugin returns an empty detail list, we would access past the
    array in:
    
     i_add_detail = (++add_details)[0];
    
    Fixes: 9ab2f79b673b37b83b358eddad68bb442d7e16e4

 src/connection-editor/connection-helpers.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/connection-editor/connection-helpers.c b/src/connection-editor/connection-helpers.c
index 85261ef..e8cc615 100644
--- a/src/connection-editor/connection-helpers.c
+++ b/src/connection-editor/connection-helpers.c
@@ -345,7 +345,7 @@ set_up_connection_type_combo (GtkComboBox *combo,
                                g_free (markup);
 
 i_next:
-                               if (!add_details)
+                               if (!i_add_detail)
                                        break;
                                i_add_detail = (++add_details)[0];
                        } while (i_add_detail);