From 9583878a7b31a37cfaca9a39d3884c06da7d1ae1 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Wed, 12 Apr 2017 07:41:11 +0100
Subject: [PATCH] Accept NULL pointer.

---
 compat/freezero.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/compat/freezero.c b/compat/freezero.c
index 916b120f..711a10c3 100644
--- a/compat/freezero.c
+++ b/compat/freezero.c
@@ -24,6 +24,8 @@
 void
 freezero(void *ptr, size_t size)
 {
-	memset(ptr, 0, size);
-	free(ptr);
+	if (ptr != NULL) {
+		memset(ptr, 0, size);
+		free(ptr);
+	}
 }