From: marshmellow42 <marshmellowrf@gmail.com>
Date: Mon, 10 Apr 2017 15:38:11 +0000 (-0400)
Subject: fix length test
X-Git-Tag: v3.0.0~16^2^2
X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/refs/pull/274/head?ds=sidebyside

fix length test

thanks @pwpiwi for catching what i missed.
---

diff --git a/client/cmddata.c b/client/cmddata.c
index 2f508efc..823da9ce 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -40,8 +40,8 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
 	if (buff == NULL) 
 		return;
 
-	if ( size + startIdx >= MAX_DEMOD_BUF_LEN)
-		size = MAX_DEMOD_BUF_LEN;
+	if ( size > MAX_DEMOD_BUF_LEN - startIdx)
+		size = MAX_DEMOD_BUF_LEN - startIdx;
 
 	size_t i = 0;
 	for (; i < size; i++){