[gnome-software: 2/8] gs-app-list: Mark the helper struct as const

[Philip Withnall <pwithnall src gnome org>]

commit 0538ff7205cc1527ddb3237abd57dc73e922b0c8
Author: Philip Withnall <pwithnall endlessos org>
Date:   Wed Apr 21 14:47:14 2021 +0100

    gs-app-list: Mark the helper struct as const
    
    This doesn’t make any functional changes. It potentially speeds things
    up a teeny bit, although that’s doubtful.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 lib/gs-app-list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/lib/gs-app-list.c b/lib/gs-app-list.c
index 746163d7c..ae10709fc 100644
--- a/lib/gs-app-list.c
+++ b/lib/gs-app-list.c
@@ -588,7 +588,7 @@ gs_app_list_sort_cb (gconstpointer a, gconstpointer b, gpointer user_data)
 {
        GsApp *app1 = GS_APP (*(GsApp **) a);
        GsApp *app2 = GS_APP (*(GsApp **) b);
-       GsAppListSortHelper *helper = (GsAppListSortHelper *) user_data;
+       const GsAppListSortHelper *helper = (GsAppListSortHelper *) user_data;
        return helper->func (app1, app2, helper->user_data);
 }