message: fuzz: Give CNode ownership to ConnmanTestMsg in process_message fuzz harness
diff: #include <test/fuzz/FuzzedDataProvider.h>
  #include <test/fuzz/fuzz.h>
  #include <test/util/mining.h>
  +#include <test/util/net.h>
  #include <test/util/setup_common.h>
  #include <util/memory.h>
  #include <validationinterface.h>
  @@ -63,15 +64,17 @@ void initialize()
  void test_one_input(const std::vector<uint8_t>& buffer)
  {
  FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  + ConnmanTestMsg& connman = *(ConnmanTestMsg*)g_setup->m_node.connman.get();
  const std::string random_message_type{fuzzed_data_provider.ConsumeBytesAsString(CMessageHeader::COMMAND_SIZE).c_str()};
  if (!LIMIT_TO_MESSAGE_TYPE.empty() && random_message_type != LIMIT_TO_MESSAGE_TYPE) {
  return;
  }
  CDataStream random_bytes_data_stream{fuzzed_data_provider.ConsumeRemainingBytes<unsigned char>(), SER_NETWORK, PROTOCOL_VERSION};
  - CNode p2p_node{0, ServiceFlags(NODE_NETWORK | NODE_WITNESS | NODE_BLOOM), 0, INVALID_SOCKET, CAddress{CService{in_addr{0x0100007f}, 7777}, NODE_NETWORK}, 0, 0, CAddress{}, std::string{}, false};
  + CNode& p2p_node = *MakeUnique<CNode>(0, ServiceFlags(NODE_NETWORK | NODE_WITNESS | NODE_BLOOM), 0, INVALID_SOCKET, CAddress{CService{in_addr{0x0100007f}, 7777}, NODE_NETWORK}, 0, 0, CAddress{}, std::string{}, false).release();
  p2p_node.fSuccessfullyConnected = true;
  p2p_node.nVersion = PROTOCOL_VERSION;
  p2p_node.SetSendVersion(PROTOCOL_VERSION);
  + connman.AddTestNode(p2p_node);
  g_setup->m_node.peer_logic->InitializeNode(&p2p_node);
  try {
  (void)ProcessMessage(&p2p_node, random_message_type, random_bytes_data_stream, GetTimeMillis(), Params(), *g_setup->m_node.chainman, *g_setup->m_node.mempool, g_setup->m_node.connman.get(), g_setup->m_node.banman.get(), std::atomic<bool>{false});
  