tc_unix.go: Make cfmakeraw compatible to Linux

Signed-off-by: Kohei Tokunaga <[email protected]>

Author: ktock

tc_unix.go

@@ -84,7 +84,7 @@ func cfmakeraw(t unix.Termios) unix.Termios {
 	t.Oflag &^= unix.OPOST
 	t.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
 	t.Cflag &^= (unix.CSIZE | unix.PARENB)
-	t.Cflag &^= unix.CS8
+	t.Cflag |= unix.CS8
 	t.Cc[unix.VMIN] = 1
 	t.Cc[unix.VTIME] = 0