[gtk+] Drop a few unneeded ifs

[Matthias Clasen <matthiasc src gnome org>]

commit 6c7e5039c784a43e884b3ae3a7ce7e5d59111a56
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Dec 8 15:38:41 2014 -0500

    Drop a few unneeded ifs
    
    It does not hurt to pass NULL to g_list_free().

 gtk/gtkappchooserwidget.c |   15 ++++-----------
 1 files changed, 4 insertions(+), 11 deletions(-)
---
diff --git a/gtk/gtkappchooserwidget.c b/gtk/gtkappchooserwidget.c
index ebe1d00..01f9a4b 100644
--- a/gtk/gtkappchooserwidget.c
+++ b/gtk/gtkappchooserwidget.c
@@ -798,17 +798,10 @@ gtk_app_chooser_widget_real_add_items (GtkAppChooserWidget *self)
   if (default_app != NULL)
     g_object_unref (default_app);
 
-  if (all_applications != NULL)
-    g_list_free_full (all_applications, g_object_unref);
-
-  if (recommended_apps != NULL)
-    g_list_free_full (recommended_apps, g_object_unref);
-
-  if (fallback_apps != NULL)
-    g_list_free_full (fallback_apps, g_object_unref);
-
-  if (exclude_apps != NULL)
-    g_list_free (exclude_apps);
+  g_list_free_full (all_applications, g_object_unref);
+  g_list_free_full (recommended_apps, g_object_unref);
+  g_list_free_full (fallback_apps, g_object_unref);
+  g_list_free (exclude_apps);
 }
 
 static void