ecryptfs: ->f_op is never NULL

commit c2e3f5d5 upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[ luis: 3.16-stable, just to make 6d65261a ("eCryptfs: don't pass
  fs-specific ioctl commands through") a clean cherry-pick ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

fs/ecryptfs/file.c

@@ -315,7 +315,7 @@ ecryptfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	struct file *lower_file = ecryptfs_file_to_lower(file);
 	long rc = -ENOIOCTLCMD;
 
-	if (lower_file->f_op && lower_file->f_op->compat_ioctl)
+	if (lower_file->f_op->compat_ioctl)
 		rc = lower_file->f_op->compat_ioctl(lower_file, cmd, arg);
 	return rc;
 }