minetest/minetest — pull request #1591 by LeMagnesium (2014-08-30 14:42:20+00:00)
Title: Add an error message.

Add an error message to tell the player that he can't teleport any other player without bring privilege. Thanks to RentedMule for discovering the issue.
Without this change, when you type /teleport player1 player2, both are connected and you only have got the teleport privilege, it tells you : "Invalid parameters ("player1 player2", or player not found (see /help teleport)".