Fixed high memory usage issue

modules/game_walking/walking.lua

@@ -20,7 +20,8 @@ function init()
     onPositionChange = onPositionChange,
     onWalk = onWalk,
     onTeleport = onTeleport,
-    onWalkFinish = onWalkFinish
+    onWalkFinish = onWalkFinish,
+    onCancelWalk = onCancelWalk
   })
 
   modules.game_interface.getRootPanel().onFocusChange = stopSmartWalk
@@ -255,6 +256,10 @@ function onWalkFinish(player)
   end
 end
 
+function onCancelWalk(player)
+  player:lockWalk(50)
+end
+
 function walk(dir) 
   lastManualWalk = g_clock.millis()
   local player = g_game.getLocalPlayer()