[gnome-applets] trash: fix -Wsign-compare warning

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 594b2bb06b2c7d23fd27fd5a450a850161e1840e
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Apr 4 15:49:27 2020 +0300

    trash: fix -Wsign-compare warning

 gnome-applets/trash/trash-empty.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-applets/trash/trash-empty.c b/gnome-applets/trash/trash-empty.c
index 653dcb164..98cdfd3ce 100644
--- a/gnome-applets/trash/trash-empty.c
+++ b/gnome-applets/trash/trash-empty.c
@@ -225,7 +225,7 @@ trash_empty_start (GtkWidget *parent)
     };
   GCancellable *cancellable;
   GtkBuilder *builder;
-  gint i;
+  guint i;
   const gchar *resource_name;
   GTask *task;