[simple-scan] Make public class public

[Robert Ancell <rancell src gnome org>]

commit 9afff9b1c649fa57832d5852105a5bb2de9c7475
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri Dec 6 11:34:58 2019 +1300

    Make public class public

 src/page-icon.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/page-icon.vala b/src/page-icon.vala
index 0822b71..793ca5b 100644
--- a/src/page-icon.vala
+++ b/src/page-icon.vala
@@ -10,7 +10,7 @@
  * license.
  */
 
-private class PageIcon : Gtk.DrawingArea
+public class PageIcon : Gtk.DrawingArea
 {
     private string text;
     private double r;