[gnome-software] trivial: Fall back to 'unknown' for a missing distro

[Richard Hughes <rhughes src gnome org>]

commit c8b031b45bbec8eaa000bad72e8a2bb1734b44a7
Author: Richard Hughes <richard hughsie com>
Date:   Wed Feb 10 16:50:17 2016 +0000

    trivial: Fall back to 'unknown' for a missing distro

 src/plugins/gs-plugin-xdg-app-reviews.c |   16 ++++++++++++++--
 1 files changed, 14 insertions(+), 2 deletions(-)
---
diff --git a/src/plugins/gs-plugin-xdg-app-reviews.c b/src/plugins/gs-plugin-xdg-app-reviews.c
index 636c7f7..d4fcfaa 100644
--- a/src/plugins/gs-plugin-xdg-app-reviews.c
+++ b/src/plugins/gs-plugin-xdg-app-reviews.c
@@ -73,11 +73,23 @@ gs_plugin_initialize (GsPlugin *plugin)
        g_autoptr(GError) error = NULL;
        plugin->priv = GS_PLUGIN_GET_PRIVATE (GsPluginPrivate);
        plugin->priv->session = soup_session_new_with_options (SOUP_SESSION_USER_AGENT, gs_user_agent (), 
NULL);
-       plugin->priv->user_hash = gs_utils_get_user_hash (&error);
-       plugin->priv->distro = gs_os_release_get_name (&error);
        plugin->priv->settings = g_settings_new ("org.gnome.software");
        plugin->priv->review_server = g_settings_get_string (plugin->priv->settings,
                                                             "review-server");
+
+       /* get the machine+user ID hash value */
+       plugin->priv->user_hash = gs_utils_get_user_hash (&error);
+       if (plugin->priv->user_hash == NULL) {
+               g_warning ("Failed to get machine+user hash: %s", error->message);
+               return;
+       }
+
+       /* get the distro name (e.g. 'Fedora') but allow a fallback */
+       plugin->priv->distro = gs_os_release_get_name (&error);
+       if (plugin->priv->distro == NULL) {
+               g_warning ("Failed to get distro name: %s", error->message);
+               plugin->priv->distro = g_strdup ("Unknown");
+       }
 }