From a3769b22380e98547937a8c00feeaef2ed2af8bc Mon Sep 17 00:00:00 2001
From: Timo Teras <timo.teras@iki.fi>
Date: Tue, 6 Jan 2009 19:20:22 +0200
Subject: [PATCH] io: check inner stream existance before creating gunzip
 stream

---
 src/gunzip.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gunzip.c b/src/gunzip.c
index ce3eeed..1d641ed 100644
--- a/src/gunzip.c
+++ b/src/gunzip.c
@@ -71,6 +71,9 @@ struct apk_istream *apk_bstream_gunzip(struct apk_bstream *bs)
 {
 	struct apk_gzip_istream *gis;
 
+	if (bs == NULL)
+		return NULL;
+
 	gis = malloc(sizeof(struct apk_gzip_istream));
 	if (gis == NULL)
 		return NULL;