Fix integer overflow in patch_delta()

Ilari Liusvaara · gitster · commit 222083a1585c · 2010-01-26T12:57:59.000-08:00
Signed-off-by: Ilari Liusvaara &lt;ilari.liusvaara@elisanet.fi&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/patch-delta.c b/patch-delta.c
@@ -33,8 +33,7 @@ void *patch_delta(const void *src_buf, unsigned long src_size,
 
 	/* now the result size */
 	size = get_delta_hdr_size(&data, top);
-	dst_buf = xmalloc(size + 1);
-	dst_buf[size] = 0;
+	dst_buf = xmallocz(size);
 
 	out = dst_buf;
 	while (data < top) {
