message: Remove test for empty vector in exploit_tests.cpp
  This may actually cause and process mesage exception so
  it doesn't make sense to check for the ban here.
diff: @@ -331,33 +331,6 @@ BOOST_AUTO_TEST_CASE(inv_tests)
  BOOST_CHECK(CNode::IsBanned(addr1));
  - // send empty INV which will result in an exception
  - vRecv1.clear();
  - CNode::ClearBanned();
  -
  - vInv.clear(); // use an empty vector
  -
  - CNode dummyNode4(INVALID_SOCKET, addr4, "", true);
  - dummyNode4.nVersion = MIN_PEER_PROTO_VERSION;
  - dummyNode4.fSuccessfullyConnected = true;
  - vRecv1 << vInv;
  - ProcessMessage(&dummyNode4, NetMsgType::INV, vRecv1, GetTime());
  - vRecv1 << vInv;
  - ProcessMessage(&dummyNode4, NetMsgType::INV, vRecv1, GetTime());
  - vRecv1 << vInv;
  - ProcessMessage(&dummyNode4, NetMsgType::INV, vRecv1, GetTime());
  - vRecv1 << vInv;
  - ProcessMessage(&dummyNode4, NetMsgType::INV, vRecv1, GetTime());
  - SendMessages(&dummyNode4); // should four messages should not cause a ban
  - BOOST_CHECK(!CNode::IsBanned(addr4));
  -
  - vRecv1 << vInv;
  - ProcessMessage(&dummyNode4, NetMsgType::INV, vRecv1, GetTime());
  - SendMessages(&dummyNode4); // send a fifth message should cause a ban
  - BOOST_CHECK(vInv.empty());
  - BOOST_CHECK(CNode::IsBanned(addr4));
  -
  -
  // INV with invalid type
  vRecv1.clear();
  vInv.clear();
  