message: Fix parameter count check for importpubkey.
  Github-Pull:
  Rebased-From:
diff: @@ -432,7 +432,7 @@ UniValue importpubkey(const JSONRPCRequest& request)
  return NullUniValue;
  }
  - if (request.fHelp || request.params.size() < 1 || request.params.size() > 4)
  + if (request.fHelp || request.params.size() < 1 || request.params.size() > 3)
  throw std::runtime_error(
  "importpubkey \"pubkey\" ( \"label\" rescan )\n"
  "\nAdds a public key (in hex) that can be watched as if it were in your wallet but cannot be used to spend. Requires a new wallet backup.\n"
  