gui: Fix setting autopause count

Once the check box was enabled, we were never setting the count again.
This means that changing pause count from 1 to 2 did not change the
count in the backend.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

gui/gst.cpp

@@ -170,6 +170,7 @@ static bool on_seek(Gtk::ScrollType type, double value)
 static void on_pause_count()
 {
 	o_enabled->set_active(true);
+	audio :: pause_after(true, o_count->get_value());
 }
 
 static void on_pause_enabled()