message: Fix for qtum-cli help
diff: @@ -3215,6 +3215,8 @@ static UniValue walletpassphrase(const JSONRPCRequest& request)
  LOCK2(cs_main, pwallet->cs_wallet);
  + if (request.fHelp)
  + return true;
  if (!pwallet->IsCrypted()) {
  throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE, "Error: running with an unencrypted wallet, but walletpassphrase was called.");
  }
  @@ -3292,6 +3294,8 @@ static UniValue walletpassphrasechange(const JSONRPCRequest& request)
  LOCK2(cs_main, pwallet->cs_wallet);
  + if (request.fHelp)
  + return true;
  if (!pwallet->IsCrypted()) {
  throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE, "Error: running with an unencrypted wallet, but walletpassphrasechange was called.");
  }
  @@ -3348,6 +3352,8 @@ static UniValue walletlock(const JSONRPCRequest& request)
  LOCK2(cs_main, pwallet->cs_wallet);
  + if (request.fHelp)
  + return true;
  if (!pwallet->IsCrypted()) {
  throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE, "Error: running with an unencrypted wallet, but walletlock was called.");
  }
  @@ -3395,6 +3401,8 @@ static UniValue encryptwallet(const JSONRPCRequest& request)
  LOCK2(cs_main, pwallet->cs_wallet);
  + if (request.fHelp)
  + return true;
  if (pwallet->IsCrypted()) {
  throw JSONRPCError(RPC_WALLET_WRONG_ENC_STATE, "Error: running with an encrypted wallet, but encryptwallet was called.");
  }
  