tty: Fix a typo noted in passing

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a3afa0c..9384480 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -2085,7 +2085,7 @@
  *	the generic functionality existed. This piece of history is preserved
  *	in the expected tty API of posix OS's.
  *
- *	Locking: none, the open fle handle ensures it won't go away.
+ *	Locking: none, the open file handle ensures it won't go away.
  */
 
 static int fionbio(struct file *file, int __user *p)