From 4d2c600f54d2f00d1604aaeb20e2285e9ab0cad9 Mon Sep 17 00:00:00 2001
From: Richard Hughes <richard@hughsie.com>
Date: Wed, 1 Mar 2017 16:40:05 +0000
Subject: [PATCH 2/4] Always check the return value when writing to the stream

---
 libgcab/cabinet.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/libgcab/cabinet.c b/libgcab/cabinet.c
index 4df9024..a675d1b 100644
--- a/libgcab/cabinet.c
+++ b/libgcab/cabinet.c
@@ -190,9 +190,10 @@ cheader_write (cheader_t *ch, GDataOutputStream *out,
         return FALSE;
 
     if (ch->flags & CABINET_HEADER_RESERVE) {
-        W2 (ch->res_header);
-        W1 (ch->res_folder);
-        W1 (ch->res_data);
+        if (!W2 (ch->res_header) ||
+            !W1 (ch->res_folder) ||
+            !W1 (ch->res_data))
+                return FALSE;
         if (g_output_stream_write (stream, ch->reserved, ch->res_header,
                                    cancellable, error) == -1)
             return FALSE;
-- 
2.9.3