Fix #9424 (setElementVisibleTo OOPdef is missing)

Author: qaisjp

Server/mods/deathmatch/logic/luadefs/CLuaElementDefs.cpp

@@ -124,6 +124,7 @@ void CLuaElementDefs::AddClass ( lua_State* luaVM )
     lua_classfunction ( luaVM, "setPosition", "setElementPosition" );
     lua_classfunction ( luaVM, "setRotation", "setElementRotation" );
     lua_classfunction ( luaVM, "setVelocity", "setElementVelocity" );
+    lua_classfunction ( luaVM, "setVisibleTo", "setElementVisibleTo" );
     lua_classfunction ( luaVM, "setMatrix", "setElementMatrix" );
     lua_classfunction ( luaVM, "setID", "setElementID" );
     lua_classfunction ( luaVM, "setInterior", "setElementInterior" );