icmp: Fix type mismatches

[Andrew Talbot]

Changelog:
    icmp: Fix type mismatches.

diff --git a/dlls/icmp/icmp_main.c b/dlls/icmp/icmp_main.c
index 82243da..393e644 100644
--- a/dlls/icmp/icmp_main.c
+++ b/dlls/icmp/icmp_main.c
@@ -315,7 +315,7 @@ DWORD WINAPI IcmpSendEcho(
 #endif
 
     send_time = GetTickCount();
-    res=sendto(icp->sid, reqbuf, reqsize, 0, (struct sockaddr*)&addr, sizeof(addr));
+    res=sendto(icp->sid, reqbuf, reqsize, 0, (__SOCKADDR_ARG)&addr, sizeof(addr));
     HeapFree(GetProcessHeap (), 0, reqbuf);
     if (res<0) {
         if (errno==EMSGSIZE)
@@ -340,7 +340,7 @@ DWORD WINAPI IcmpSendEcho(
     ip_header_len=0; /* because gcc was complaining */
     while ((res=poll(&fdr,1,Timeout))>0) {
         recv_time = GetTickCount();
-        res=recvfrom(icp->sid, (char*)ip_header, maxlen, 0, (struct sockaddr*)&addr,&addrlen);
+        res=recvfrom(icp->sid, (char*)ip_header, maxlen, 0, (__SOCKADDR_ARG)&addr, &addrlen);
         TRACE("received %d bytes from %s\n",res, inet_ntoa(addr.sin_addr));
         ier->Status=IP_REQ_TIMED_OUT;