From 023c26f943faac15d49b203080c1d3e19b7db939 Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Sat, 2 Mar 2019 21:47:30 +0100
Subject: [PATCH] rfc2047: blaze822_decode_rfc2047: account for space for
 trailing nul

---
 rfc2047.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rfc2047.c b/rfc2047.c
index f25762d..b581976 100644
--- a/rfc2047.c
+++ b/rfc2047.c
@@ -130,6 +130,10 @@ blaze822_decode_rfc2047(char *dst, char *src, size_t dlen, char *tgtenc)
 	iconv_t ic = (iconv_t)-1;
 	char *srcenc = 0;
 
+	// need space for trailing nul
+	if (dlen-- == 0)
+		return 0;
+
 	char *startdst = dst;
 	size_t startdlen = dlen;