Set sin_len if it exists.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@19009 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/test_plugin.c

@@ -60,6 +60,9 @@ resolve_lookup(void *ctx,
 
     memset(&s, 0, sizeof(s));
 
+#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
+    s.sin_len = sizeof(s);
+#endif
     s.sin_family = AF_INET;
     s.sin_port = htons(88);
     s.sin_addr.s_addr = htonl(0x7f000001);