[gnome-shell] misc: Add missing check on reply from systemd's CanSuspend D-Bus method

[Mario Sanchez Prada <msanchez src gnome org>]

commit be78f0f36a17a45f44b7c6723138d3e02944ee8d
Author: Mario Sanchez Prada <mario endlessm com>
Date:   Wed Apr 22 23:00:16 2015 +0100

    misc: Add missing check on reply from systemd's CanSuspend D-Bus method
    
    According to systemd logind's documentation, the CanSuspend() method
    "returns 'na' in case "the operation is not available because hardware,
    kernel or drivers do not support it", while "'no' is returned if the
    operation is available but the user is not allowed to execute it".
    
    See http://www.freedesktop.org/wiki/Software/systemd/logind
    
    Thus, we need to return true here when the reply for the CanSuspend
    method is neither 'no' nor 'na', or we would providing false positives
    in cases where suspension is simply unsupported.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=748338

 js/misc/loginManager.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/misc/loginManager.js b/js/misc/loginManager.js
index b4ed4a6..6ed8262 100644
--- a/js/misc/loginManager.js
+++ b/js/misc/loginManager.js
@@ -134,7 +134,7 @@ const LoginManagerSystemd = new Lang.Class({
             if (error)
                 asyncCallback(false);
             else
-                asyncCallback(result[0] != 'no');
+                asyncCallback(result[0] != 'no' && result[0] != 'na');
         });
     },