Some minor things.

Just got back today, awesome progress ed :)

modules/client_options/options.lua

@@ -131,6 +131,8 @@ function terminate()
   consolePanel = nil
   graphicsPanel = nil
   audioPanel = nil
+  audioButton:destroy()
+  audioButton = nil
 end
 
 function toggle()

modules/game_minimap/minimap.lua

@@ -436,9 +436,9 @@ function onMinimapMouseWheel(self, mousePos, direction)
   local keyboardModifiers = g_keyboard.getModifiers()
 
   if direction == MouseWheelUp and keyboardModifiers == KeyboardNoModifier then
-    miniMapZoomOut()
-  elseif direction == MouseWheelDown and keyboardModifiers == KeyboardNoModifier then
     miniMapZoomIn()
+  elseif direction == MouseWheelDown and keyboardModifiers == KeyboardNoModifier then
+    miniMapZoomOut()
   elseif direction == MouseWheelDown and keyboardModifiers == KeyboardCtrlModifier then
     minimapFloorUp(1)
   elseif direction == MouseWheelUp and keyboardModifiers == KeyboardCtrlModifier then