tty: Fix mistyping of /dev/tty

/dev/tty stands for current terminal which we don't yet
implemented a support for.

This is a bugfix for upcoming stable version, the proper
support of /dev/tty is gonna be implemented separately.
Reported-by: Saied Kazemi <saied@google.com>
CC: Andrew Vagin <avagin@parallels.com>
CC: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/tty.h

@@ -31,7 +31,7 @@ static inline int tty_type(int major, int minor)
 {
 	switch (major) {
 	case TTYAUX_MAJOR:
-		if (minor == 0 || minor == 2)
+		if (minor == 2)
 			return TTY_TYPE_PTM;
 		else if (minor == 1)
 			return TTY_TYPE_CONSOLE;