From bf060ff273fddaeff0eb2f05225ec81ffde98710 Mon Sep 17 00:00:00 2001
From: Stéphane Raimbault <stephane.raimbault@gmail.com>
Date: Tue, 19 Nov 2013 18:05:20 +0100
Subject: [PATCH] Add const on timeval argument on Windows internal API

---
 src/modbus-rtu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/modbus-rtu.c b/src/modbus-rtu.c
index b4ce08f..524c5df 100644
--- a/src/modbus-rtu.c
+++ b/src/modbus-rtu.c
@@ -193,7 +193,7 @@ static void win32_ser_init(struct win32_ser *ws) {
 
 /* FIXME Try to remove length_to_read -> max_len argument, only used by win32 */
 static int win32_ser_select(struct win32_ser *ws, int max_len,
-                            struct timeval *tv) {
+                            const struct timeval *tv) {
     COMMTIMEOUTS comm_to;
     unsigned int msec = 0;
 
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