There is an assert in `CWalletTx::RelayWalletTransaction` that gets hit.  All other code paths check `fBroadcastTransactions` before getting to `CWallet::ResendWalletTransactionsBefore` except the rpc call `resendwalletransactions`.

It's an easy fix, but we just need to decide whether to throw an error or return an empty array of rebroadcasted transaction ids.

Should be fixed for 0.15.
"4. (dummy)           (numeric, optional) Ignored. Remains for backward compatibility.\n"
            "5. \"comment\"       (string, optional) An optional comment, stored in the wallet only.\n"
            "\nResult:\n"
            "true|false           (boolean) true if successful.\n"
            "\nExamples:\n"
            "\nMove 0.01 " + CURRENCY_UNIT + " from the default account to the account named tabby\n"
            + HelpExampleCli("move", "\"\" \"tabby\" 0.01") +
            "\nMove 0.01 " + CURRENCY_UNIT + " timotei to akiko with a comment and funds have 6 confirmations\n"
            + HelpExampleCli("move", "\"timotei\" \"akiko\" 0.01 6 \"happy birthday!\"") +
            "\nAs a json rpc call\n"
            + HelpExampleRpc("move", "\"timotei\", \"akiko\", 0.01, 6, \"happy birthday!\"")
        );
    LOCK2(cs_main, pwallet->cs_wallet);
    std::string strFrom = AccountFromValue(request.params[0]);
    std::string strTo = AccountFromValue(request.params[1]);
    CAmount nAmount = AmountFromValue(request.params[2]);
    if (nAmount <= 0)
        throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount for send");
    if (request.params.size() > 3)
        
        (void)request.params[3].get_int();
    std::string strComment;
    if (request.params.size() > 4)
        strComment = request.params[4].get_str();
    if (!pwallet->AccountMove(strFrom, strTo, nAmount, strComment)) {
        throw JSONRPCError(RPC_DATABASE_ERROR, "database error");
    }
    return true;
}
UniValue sendfrom(const JSONRPCRequest& request)