[gnome-software] GCancellable is optional...

[Richard Hughes <rhughes src gnome org>]

commit 6b7e2e59afa8d5f85569dba4ffd123c584c0b281
Author: Richard Hughes <richard hughsie com>
Date:   Thu Aug 22 18:14:08 2013 +0100

    GCancellable is optional...

 src/gs-plugin-loader.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/gs-plugin-loader.c b/src/gs-plugin-loader.c
index 9faae16..603bd6c 100644
--- a/src/gs-plugin-loader.c
+++ b/src/gs-plugin-loader.c
@@ -960,7 +960,8 @@ gs_plugin_loader_thread_func (gpointer user_data)
 
        g_object_unref (helper->plugin_loader);
        g_object_unref (helper->app);
-       g_object_unref (helper->cancellable);
+       if (helper->cancellable != NULL)
+               g_object_unref (helper->cancellable);
        g_free (helper);
        return NULL;
 }
@@ -977,7 +978,8 @@ gs_plugin_loader_app_install (GsPluginLoader *plugin_loader,
        helper = g_new0 (GsPluginLoaderThreadHelper, 1);
        helper->plugin_loader = g_object_ref (plugin_loader);
        helper->app = g_object_ref (app);
-       helper->cancellable = g_object_ref (cancellable);
+       if (cancellable != NULL)
+               helper->cancellable = g_object_ref (cancellable);
        helper->function_name = "gs_plugin_app_install";
        helper->state_progress = GS_APP_STATE_INSTALLING;
        helper->state_success = GS_APP_STATE_INSTALLED;
@@ -999,7 +1001,8 @@ gs_plugin_loader_app_remove (GsPluginLoader *plugin_loader,
        helper = g_new0 (GsPluginLoaderThreadHelper, 1);
        helper->plugin_loader = g_object_ref (plugin_loader);
        helper->app = g_object_ref (app);
-       helper->cancellable = g_object_ref (cancellable);
+       if (cancellable != NULL)
+               helper->cancellable = g_object_ref (cancellable);
        helper->function_name = "gs_plugin_app_remove";
        helper->state_progress = GS_APP_STATE_REMOVING;
        helper->state_success = GS_APP_STATE_AVAILABLE;