Fix LookupLangKey retrieving invalid index

amxmodx/amxmodx.cpp

@@ -4511,7 +4511,7 @@ static cell AMX_NATIVE_CALL LookupLangKey(AMX *amx, cell *params)
 {
 	int len;
 	char *key=get_amxstring(amx,params[3],0,len);
-	const char *def=translate(amx, playerlang(params[4]),key);
+	const char *def=translate(amx, playerlang(*get_amxaddr(amx, params[4])),key);
 
 	if (def==NULL)
 	{