Vote to end
From Warzone Wiki
Players can vote to end a game. If all players who are alive in a game vote to end, the game is ended without declaring a winner or loser.
Vote to end does not work in ladder or tournament games, since a winner must be declared.
The game still counts as a loss for players who are eliminated, surrendered, or booted before the game is ended by vote. Only the players who were alive at the time it ends have the game excluded from their statistics.