use new overlay isOverlayEnabled API

Author: myk002

agitation-rebalance.lua

@@ -729,8 +729,7 @@ local function print_status()
     for k,v in pairs(state.features) do
         print(('  %15s: %s'):format(k, v))
     end
-    print(('  %15s: %s'):format('monitor',
-        overlay.get_state().config[WIDGET_NAME].enabled or 'false'))
+    print(('  %15s: %s'):format('monitor', overlay.isOverlayEnabled(WIDGET_NAME) or 'false'))
     print()
     print('difficulty settings:')
     print(('     Wilderness irritation minimum: %d (about %d tree(s) until initial attacks are possible)'):format(

gui/notes.lua

@@ -335,8 +335,7 @@ function NotesScreen:onRenderFrame(dc, rect)
 end
 
 function NotesScreen:onAboutToShow()
-    local notes_overlay = overlay.get_state().config[OVERLAY_NAME]
-    if notes_overlay and not notes_overlay.enabled then
+    if overlay.isOverlayEnabled(OVERLAY_NAME) then
         self.should_disable_overlay = true
         overlay.overlay_command({'enable', 'notes.map_notes'})
     end