Silence compiler warning

src/ca/udpiiu.cpp

@@ -685,6 +685,8 @@ bool udpiiu::beaconAction (
 {
     struct sockaddr_in ina;
 
+    memset(&ina, 0, sizeof(struct sockaddr_in));
+
     if ( net_addr.sa.sa_family != AF_INET ) {
         return false;
     }