[gnome-software] Withdraw notification when prepared update gets invalidated

[Kalev Lember <klember src gnome org>]

commit dff5d863d8f7ed2d61cba67c42de7a7b925d5851
Author: Kalev Lember <klember redhat com>
Date:   Tue Jun 23 14:54:43 2015 +0200

    Withdraw notification when prepared update gets invalidated
    
    When something external touches the package database and PackageKit
    removes the /usr/lib/PackageKit/prepared-update file, make sure we also
    withdraw the "Updates Available" notification. This ensures that we
    don't leave behind stale notifications that open up a blank "Software is
    up to date" page.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749306

 src/gs-update-monitor.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-update-monitor.c b/src/gs-update-monitor.c
index dc09ea9..27bd556 100644
--- a/src/gs-update-monitor.c
+++ b/src/gs-update-monitor.c
@@ -113,6 +113,13 @@ offline_update_monitor_cb (GFileMonitor      *file_monitor,
                           GFileMonitorEvent  event_type,
                           GsUpdateMonitor   *monitor)
 {
+       if (!g_file_query_exists (monitor->offline_update_file, NULL)) {
+               g_debug ("prepared update removed; withdrawing updates-available notification");
+               g_application_withdraw_notification (monitor->application,
+                                                    "updates-available");
+               return;
+       }
+
        notify_offline_update_available (monitor);
 }