[gnome-boxes] installer: Update progress on error to setup driver

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 443af23e652d80e0f454a7bf7c91860671b4dcbd
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Fri Jan 25 17:50:35 2013 +0200

    installer: Update progress on error to setup driver
    
    Ensure driver installation progress always reaches 100% even if an error
    occurs during the installation.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=691546

 src/unattended-installer.vala |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/unattended-installer.vala b/src/unattended-installer.vala
index ef6dd2f..1a74fa3 100644
--- a/src/unattended-installer.vala
+++ b/src/unattended-installer.vala
@@ -594,20 +594,23 @@ private class Boxes.UnattendedInstaller: InstallerMedia {
         var drivers = get_pre_installable_drivers ();
         var scripts = get_pre_installer_scripts ();
 
-        if (drivers.length () == 0 || scripts.length () == 0)
+        if (drivers.length () == 0 || scripts.length () == 0) {
+            progress.progress = 1.0;
             return;
+        }
 
         progress.info = _("Downloading device drivers...");
         var driver_progress_scale = 1d / drivers.length () / scripts.length ();
 
         foreach (var driver in drivers) {
             foreach (var script in scripts) {
+                var driver_progress = progress.add_child_activity (driver_progress_scale);
                 try {
-                    var driver_progress = progress.add_child_activity (driver_progress_scale);
                     yield setup_pre_install_driver_for_script (driver, script, driver_progress, cancellable);
-                    driver_progress.progress = 1.0; // Ensure progress reaches 100%
                 } catch (GLib.Error e) {
                     debug ("Failed to make use of drivers at '%s': %s", driver.get_location (), e.message);
+                } finally {
+                    driver_progress.progress = 1.0; // Ensure progress reaches 100%
                 }
             }
         }