From f24324c27fe8299b22e983171285eb93d4a74721 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 3 Oct 2011 12:41:51 +0200
Subject: [PATCH] explicitly zero extra buffer space added with realloc to
 silence valgrind warnings

---
 blob.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/blob.c b/blob.c
index edf55d4..4bc67a8 100644
--- a/blob.c
+++ b/blob.c
@@ -18,8 +18,11 @@
 static bool
 blob_buffer_grow(struct blob_buf *buf, int minlen)
 {
-	buf->buflen += ((minlen / 256) + 1) * 256;
+	int delta = ((minlen / 256) + 1) * 256;
+	buf->buflen += delta;
 	buf->buf = realloc(buf->buf, buf->buflen);
+	if (buf->buf)
+		memset(buf->buf + buf->buflen - delta, 0, delta);
 	return !!buf->buf;
 }