USB: Fix memory leak in mon_stat_release

Fix the leak of the snap structure allocated in mon_stat_open().

Signed-off-by: Ming Lei <[e-mail]>
Acked-by: Pete Zaitcev <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/mon/mon_stat.c

···
 
 static int mon_stat_release(struct inode *inode, struct file *file)
 {
+	struct snap *sp = file->private_data;
+	file->private_data = NULL;
+	kfree(sp);
 	return 0;
 }