rtc: single_open() leaks

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
index ea54a6e..e39e740 100644
--- a/drivers/char/efirtc.c
+++ b/drivers/char/efirtc.c
@@ -369,7 +369,7 @@
 	.open		= efi_rtc_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
 static int __init