input: single_open() leak

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

drivers/input/misc/hp_sdc_rtc.c

@@ -515,7 +515,7 @@ static const struct file_operations hp_sdc_rtc_proc_fops = {
 	.open		= hp_sdc_rtc_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
-	.release	= seq_release,
+	.release	= single_release,
 };
 
 static int hp_sdc_rtc_ioctl(struct file *file,