[gnome-software/gnome-3-20] trivial: Fix PackageKit related warning in gs-update-monitor

[Richard Hughes <rhughes src gnome org>]

commit afaad892df813400451846f4f15a863453daf3c1
Author: Joaquim Rocha <jrocha endlessm com>
Date:   Thu Mar 17 14:17:47 2016 +0100

    trivial: Fix PackageKit related warning in gs-update-monitor
    
    The function gs_update_monitor_permission_get tries to get permissions
    a PackageKit DBus service which, when PackageKit is not installed,
    results in a warning.
    This patch changes it so the call is only performed if PackageKit is
    available.

 src/gs-update-monitor.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-update-monitor.c b/src/gs-update-monitor.c
index 2ff2e1f..032a96f 100644
--- a/src/gs-update-monitor.c
+++ b/src/gs-update-monitor.c
@@ -754,8 +754,10 @@ GPermission *
 gs_update_monitor_permission_get (void)
 {
        static GPermission *permission = NULL;
+#ifdef HAVE_PACKAGEKIT
        if (permission == NULL)
                permission = gs_utils_get_permission ("org.freedesktop.packagekit.trigger-offline-update");
+#endif
        return permission;
 }