[gnome-todo] timeline: Silence compiler warning

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 27ec109142596842523c79fca866d5260f2cb2d3
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Sep 25 17:30:41 2020 -0300

    timeline: Silence compiler warning

 src/animation/gtd-timeline.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/animation/gtd-timeline.c b/src/animation/gtd-timeline.c
index e9aaa6b..7c2e684 100644
--- a/src/animation/gtd-timeline.c
+++ b/src/animation/gtd-timeline.c
@@ -352,7 +352,7 @@ gtd_timeline_do_frame (GtdTimeline *self)
       if (priv->elapsed_time != end_msecs &&
           !(/* Except allow changing time from 0 -> duration (or vice-versa)
                since these are considered equivalent */
-            (priv->elapsed_time == 0 && end_msecs == priv->duration) ||
+            (priv->elapsed_time == 0 && end_msecs == (gint) priv->duration) ||
             (priv->elapsed_time == priv->duration && end_msecs == 0)
           ))
         {