BUG/MINOR: fix http-response set-log-level parsing error

BUG/MINOR: fix http-response set-log-level parsing error

hi,
    `http-response set-log-level` doesn't work, as the config parsing always set the log level to -1.

From 2b183447c5b37c19aae5d596871fc0b9004c87b4 Mon Sep 17 00:00:00 2001
From: Ruoshan Huang <ruoshan.huang@gmail.com>
Date: Wed, 15 Jun 2016 22:07:58 +0800
Subject: [PATCH] BUG/MINOR: fix http-response set-log-level parsing error

http-response set-log-level can't parse the log level correctly,
as the level argument ptr is one byte ahead when passed to get_log_level
---
 src/proto_http.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)