Merge pull request #711 from dscarpac/playarea-api-fix

Fixed bug in PlayAreaApi

src/core/PlayAreaApi.ttslua

@@ -105,7 +105,7 @@ do
   -- Returns a deep copy of the currently tracked locations
   PlayAreaApi.getTrackedLocations = function()
     local t = {}
-    for k, v in pairs(getPlayArea().call("getTrackedLocations")) do
+    for k, v in pairs(getPlayArea().call("getTrackedLocations", {})) do
       t[k] = v
     end
     return t