Startup Runtime Fix (#12922)

code/controllers/configuration.dm

@@ -294,6 +294,7 @@ var/list/gamemode_cache = list()
 	// Configurable hostname / port for the NTSL Daemon.
 	var/ntsl_hostname = "localhost"
 	var/ntsl_port = "1945"
+	var/ntsl_disabled = TRUE
 
 	// Is external Auth enabled
 	var/external_auth = FALSE
@@ -938,6 +939,8 @@ var/list/gamemode_cache = list()
 					ntsl_hostname = value
 				if ("ntsl_port")
 					ntsl_port = value
+				if ("ntsl_disabled")
+					ntsl_disabled = text2num(value)
 
 				if ("external_auth")
 					external_auth = TRUE