message: Fix variable shadowing test/net_tests.cpp
  test/net_tests.cpp:57:56: warning: declaration shadows a variable in the global namespace [-Wshadow]
  CDataStream AddrmanToStream(CAddrManSerializationMock &addrman)
  ^
  ./net.h:185:17: note: previous declaration is here
  extern CAddrMan addrman;
  ^
diff: @@ -54,11 +54,11 @@ public:
  }
  };
  -CDataStream AddrmanToStream(CAddrManSerializationMock &addrman)
  +CDataStream AddrmanToStream(CAddrManSerializationMock &_addrman)
  {
  CDataStream ssPeersIn(SER_DISK, CLIENT_VERSION);
  ssPeersIn << FLATDATA(Params().MessageStart());
  - ssPeersIn << addrman;
  + ssPeersIn << _addrman;
  std::string str = ssPeersIn.str();
  std::vector<uint8_t> vchData(str.begin(), str.end());
  return CDataStream(vchData, SER_DISK, CLIENT_VERSION);
  