[PATCH] Column counting fix in n_tty.c

From: Chris Heath <chris@heathens.co.nz>

Here's a column counting bug that was lurking in a corner of n_tty.c.

drivers/char/n_tty.c

@@ -325,7 +325,7 @@ static inline void finish_erasing(struct tty_struct *tty)
 {
 	if (tty->erasing) {
 		put_char('/', tty);
-		tty->column += 2;
+		tty->column++;
 		tty->erasing = 0;
 	}
 }