Do not do a useless merge on accounts without IBAN
My savings account does not have any associated IBAN. Then, the iban
key is null
in Weboob output, but undefined
on Kresus' side. Then, the current check fails.
This will check that both iban are null
-valued or that they are the same, to define a perfect match. This means that useless merge of savings accounts should be spared.