bss_dgram.c: fix compilation failure and warning on Windows with

contemporary SDK [from HEAD].

diff --git a/crypto/bio/bss_dgram.c b/crypto/bio/bss_dgram.c
index 3b251ba8d8febdf4004fe9a988cbd21c45f595be..7b87a043c430fbe21691a1514f0206c87a22d2e5 100644 (file)
--- a/crypto/bio/bss_dgram.c
+++ b/crypto/bio/bss_dgram.c
@@ -81,6 +81,10 @@
 #define IP_MTU      14 /* linux is lame */
 #endif
 
+#if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6)
+#define IPPROTO_IPV6 41 /* windows is lame */
+#endif
+
 #if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED)
 /* Standard definition causes type-punning problems. */
 #undef IN6_IS_ADDR_V4MAPPED
@@ -874,7 +878,7 @@ static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
                        case AF_INET6:
 #if defined(IPV6_DONTFRAG)
                                if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG,
-                                       &sockopt_val, sizeof(sockopt_val))) < 0)
+                                       (const void *)&sockopt_val, sizeof(sockopt_val))) < 0)
                                        { perror("setsockopt"); ret = -1; }
 #elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER)
                                if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),