Added a generic Lua user data cache

Based on a native Lua table with weak values, so that the user data objects
that are created can be garbage collected when no longer referenced.

Reviewed-by: Yohann Ferreira

1 files changed, 2 insertions, 2 deletions

diff --git a/src/scripting/lua.cpp b/src/scripting/lua.cpp
index 63149792..b9c76c23 100644
--- a/src/scripting/lua.cpp
+++ b/src/scripting/lua.cpp
@@ -2703,9 +2703,9 @@ LuaScript::LuaScript():
     LuaMapObject::registerType(mState, "MapObject", members_MapObject);
 
     // Make script object available to callback functions.
-    lua_pushlightuserdata(mState, (void *)&registryKey);
+    lua_pushlightuserdata(mState, const_cast<char *>(&registryKey));
     lua_pushlightuserdata(mState, this);
-    lua_settable(mState, LUA_REGISTRYINDEX);
+    lua_rawset(mState, LUA_REGISTRYINDEX);
 
     // Push the error handler to first index of the stack
     lua_getglobal(mState, "debug");