More HBCI work.

[Christian Stimming]

Log Message:
-----------
More HBCI work.

2004-09-30  Christian Stimming  <stimming at tuhh.de>

	* src/import-export/hbci/gnc-hbci-getbalance.c: Fix HBCI balance
	retrieval when some of the returned balance is NULL.

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/src/import-export/hbci:
        gnc-hbci-getbalance.c
        hbci-interaction.c