Fix a (harmless) user creation error

When a players map is set, it automatically triggers a player record
write.  When a new player is being created, the map is set before
the player is added via @addchar.

This attempted to write record number undefined in the player file,
which threw an exception.  Since exceptions are being caught, logged,
and ignored, this did not cause a problem, but did log an error when
it wasn't necessary.

xtrn/lord2/l2lib.js

@@ -40,8 +40,10 @@ function savetime()
 
 function player_put()
 {
-	player.lastsaved = savetime();
-	player.put();
+	if (player.Record !== undefined) {
+		player.lastsaved = savetime();
+		player.put();
+	}
 }
 
 var Player_Def = [