From 48235fe344156b05e836d9b963232bd13149069d Mon Sep 17 00:00:00 2001
From: "Pedro F. Giffuni" <pfg@FreeBSD.org>
Date: Fri, 13 May 2016 15:57:55 +0000
Subject: [PATCH] i2c(8): uninitialized variable (UNINIT).

If i2c_opt.width is somehow zero, buf will be left uninitialized and may
cause trouble later on. This is a followup to r299586.

CID:	1331548
---
 usr.sbin/i2c/i2c.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/i2c/i2c.c b/usr.sbin/i2c/i2c.c
index 744fefc7121..7714cf0b0e9 100644
--- a/usr.sbin/i2c/i2c.c
+++ b/usr.sbin/i2c/i2c.c
@@ -294,8 +294,10 @@ i2c_write(char *dev, struct options i2c_opt, char *i2c_buf)
 			err_msg = "error: offset malloc";
 			goto err1;
 		}
-	} else
+	} else {
 		bufsize = 0;
+		buf = NULL;
+	}
 
 	switch(i2c_opt.mode) {
 	case I2C_MODE_STOP_START: