Fixed uninitialized PID.ip failure (fix #6) (#57)

net/net-tcp-rpc-client.c

@@ -243,7 +243,9 @@ static int tcp_rpcc_send_handshake_packet (connection_job_t C) /* {{{ */ {
 
   struct tcp_rpc_data *D = TCP_RPC_DATA (C);
   struct tcp_rpc_handshake_packet P;
-  assert (PID.ip);
+  if (!PID.pid) {
+    init_client_PID (c->our_ip);
+  }
   memset (&P, 0, sizeof (P));
   P.type = RPC_HANDSHAKE;
   P.flags = tcp_get_default_rpc_flags () & RPCF_USE_CRC32C;

net/net-tcp-rpc-server.c

@@ -237,7 +237,9 @@ static int tcp_rpcs_process_nonce_packet (connection_job_t C, struct raw_message
 static int tcp_rpcs_send_handshake_packet (connection_job_t c) {
   struct tcp_rpc_data *D = TCP_RPC_DATA(c);
   struct tcp_rpc_handshake_packet P;
-  assert (PID.pid);
+  if (!PID.ip) {
+    PID.ip = get_my_ipv4 ();
+  }
   memset (&P, 0, sizeof (P));
   P.type = RPC_HANDSHAKE;
   P.flags = D->crypto_flags & RPCF_USE_CRC32C;