From 6fa16ea77fa9d1a08cf696f40fae8c07603b94d8 Mon Sep 17 00:00:00 2001
From: Mike Black W9MDB <mdblack98@yahoo.com>
Date: Sun, 7 May 2023 17:38:45 -0500
Subject: [PATCH] Fix mingw compile warning
 https://github.com/Hamlib/Hamlib/issues/695

---
 src/multicast.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/multicast.c b/src/multicast.c
index edf3faa29..07fd910c3 100644
--- a/src/multicast.c
+++ b/src/multicast.c
@@ -306,7 +306,7 @@ int multicast_init(RIG *rig, char *addr, int port)
 
     // Join the multicast group
     if (setsockopt(rig->state.multicast->sock, IPPROTO_IP, IP_ADD_MEMBERSHIP,
-                   &rig->state.multicast->mreq, sizeof(rig->state.multicast->mreq)) < 0)
+                   (char*)&rig->state.multicast->mreq, sizeof(rig->state.multicast->mreq)) < 0)
     {
         rig_debug(RIG_DEBUG_ERR, "%s: setsockopt: %s\n", __func__, strerror(errno));
         return -RIG_EIO;
@@ -333,7 +333,7 @@ void multicast_close(RIG *rig)
 
     // Leave the multicast group
     if ((retval = setsockopt(rig->state.multicast->sock, IPPROTO_IP,
-                             IP_DROP_MEMBERSHIP, &rig->state.multicast->mreq,
+                             IP_DROP_MEMBERSHIP, (char*)&rig->state.multicast->mreq,
                              sizeof(rig->state.multicast->mreq))) < 0)
     {
         rig_debug(RIG_DEBUG_ERR, "%s: setsockopt: %s\n", __func__, strerror(errno));