[iagno] Reload theme when night mode is toggled.

[Arnaud B. <arnaudb src gnome org>]

commit 0f9f246852c0992cac8b9eaf85f058d50737838e
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Aug 3 19:15:21 2019 +0200

    Reload theme when night mode is toggled.

 src/iagno.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/iagno.vala b/src/iagno.vala
index 91ec8fb..a7bb696 100644
--- a/src/iagno.vala
+++ b/src/iagno.vala
@@ -388,6 +388,7 @@ private class Iagno : Gtk.Application, BaseApplication
         requires (gvariant != null)
     {
         night_light_monitor.set_use_night_mode (((!) gvariant).get_boolean ());
+        view.theme_changed ();
     }
 
     /*\