From a9fb6db249368a76c5b89a55aa0d7bd85733f975 Mon Sep 17 00:00:00 2001
From: hans <hans@hannover.ccc.de>
Date: Wed, 26 Aug 2015 16:39:54 +0200
Subject: [PATCH] add malloc check

malloc can fail. check for errors or use xmalloc.
since this is bsd only, it is safe to use err and err.h.
---
 src/bsd/tunemu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/bsd/tunemu.c b/src/bsd/tunemu.c
index 1ce90074..90873d7b 100644
--- a/src/bsd/tunemu.c
+++ b/src/bsd/tunemu.c
@@ -33,6 +33,7 @@
 #include <stdint.h>
 #include <ctype.h>
 #include <fcntl.h>
+#include <err.h>
 
 #define PPPPROTO_CTL 1
 
@@ -259,8 +260,8 @@ static void allocate_data_buffer(int size)
 	if (data_buffer_length < size)
 	{
 		free(data_buffer);
-		data_buffer_length = size;
-		data_buffer = malloc(data_buffer_length);
+		if ((data_buffer = malloc(size)) == NULL)
+			err(1, NULL);
 	}
 }