r20260 - gnucash/trunk/src/engine - Fix missing copying of invoice currency on "Copy Invoice".

[Christian Stimming]

Author: cstim
Date: 2011-02-09 16:10:55 -0500 (Wed, 09 Feb 2011)
New Revision: 20260
Trac: http://svn.gnucash.org/trac/changeset/20260

Modified:
   gnucash/trunk/src/engine/gncInvoice.c
Log:
Fix missing copying of invoice currency on "Copy Invoice".

Unfortunately this feature has been creating invoices with no currency set.
This leads to weird amounts that have more digits than expected and don't
sum up correctly, and it also triggers the warning dialog "One or more of
the entries are for accounts different from the invoice/bill currency. (...)"