rtc: single_open() leaks

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

drivers/char/efirtc.c

@@ -369,7 +369,7 @@ static const struct file_operations efi_rtc_proc_fops = {
 	.open		= efi_rtc_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
 static int __init 

drivers/char/genrtc.c

@@ -465,7 +465,7 @@ static const struct file_operations gen_rtc_proc_fops = {
 	.open		= gen_rtc_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
 static int __init gen_rtc_proc_init(void)