[gnome-control-center] thunderbolt: specific message for unknown security

[Benjamin Berg <bberg src gnome org>]

commit b9136fd46885587363e21c10a2cfdcd6bcaee2de
Author: Christian Kellner <christian kellner me>
Date:   Wed Jan 23 17:55:43 2019 +0100

    thunderbolt: specific message for unknown security
    
    If bolt cannot determine the security level, which in theory should
    never happen[1] the standard no-thunderbolt message seems not
    entirely appropriate. Instead show a different message that is more
    tailored to this unusual case.
    
    [1] The following (unlikely) reasons would invoke such a scenario:
       - new security level not supported by boltd
       - old hardware with not force-power support and the thunderbolt
         controller has not yet been powered up

 panels/thunderbolt/cc-bolt-panel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/panels/thunderbolt/cc-bolt-panel.c b/panels/thunderbolt/cc-bolt-panel.c
index 8defff3d0..f45916627 100644
--- a/panels/thunderbolt/cc-bolt-panel.c
+++ b/panels/thunderbolt/cc-bolt-panel.c
@@ -505,7 +505,7 @@ cc_bolt_panel_name_owner_changed (CcBoltPanel *panel)
       break;
 
     case BOLT_SECURITY_UNKNOWN:
-      text = NULL;
+      text = _("Thunderbolt security level could not be determined.");;
       break;
     }