From: Alexis Green <alexis@cessp.it>
Date: Tue, 2 Aug 2016 20:57:44 +0000 (-0700)
Subject: FIX: CoverityScan 123465 - Resource leak
X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/0892708119735d1f3720700a8334a35bc37706c0?hp=5147ec695991384578073c93d65e268f852b59c7

FIX: CoverityScan 123465 - Resource leak
---

diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c
index 731cead1..d55ea98d 100644
--- a/client/cmdhflegic.c
+++ b/client/cmdhflegic.c
@@ -575,6 +575,9 @@ int CmdLegicCalcCrc8(const char *Cmd){
 		switch(param_getchar(Cmd, cmdp)) {
 		case 'b':
 		case 'B':
+			// it's possible for user to accidentally enter "b" parameter
+			// more than once - we have to clean previous malloc
+			if (data) free(data);
 			data = malloc(len);
 			if ( data == NULL ) {
 				PrintAndLog("Can't allocate memory. exiting");