[testnet] cli_wallet: list_my_accounts returns error

Using current HEAD of develop How to reproduce: import private key of initminer to the wallet use list_my_accounts command

returns:

10 assert_exception: Assert Exception
var.is_object(): Asset has to be treated as object.
    {}
    asset.cpp:582 from_variant

    {}
    asset.cpp:599 from_variant

expected behavior:

initminer        39976000.000 TESTS        208590.358603 VESTS  7000000.000 TBD
-------------------------------------------------------------------------
TOTAL            39976000.000 TESTS        208590.358603 VESTS  7000000.000 TBD

That's because of a difference in balance representation, i.e.:

"hbd_balance":"7000000.000 TBD"

"hbd_balance":{"amount":"7000000000","precision":3,"nai":"@@000000013"}