Don't bother closing fds 0-2 before dup2ing over them; there's no

need, and it means we always have a valid open stderr.

[originally from svn r2109]

unix/pty.c

@@ -432,9 +432,6 @@ static char *pty_init(char *host, int port, char **realhost, int nodelay)
 	}
 
 	close(pty_master_fd);
-	close(0);
-	close(1);
-	close(2);
 	fcntl(slavefd, F_SETFD, 0);    /* don't close on exec */
 	dup2(slavefd, 0);
 	dup2(slavefd, 1);