UnicodeDecodeError in utils.py", line 959 when configuring printer with non-ascii company name

[Frederik Himpe]

Original Mandriva bug report: https://qa.mandriva.com/show_bug.cgi?id=55919

The user sets up a HP LaserJet M2727nf MFP printer and enters non-ascii characters in the company name of the fax.

Then he tries to configure the printer on his Mandriva system by using hp-setup. hp-setup crashes with this backtrace:

The installation aborts with the following errors:
Traceback (most recent call last):
  File "/usr/share/hplip/ui4/setupdialog.py", line 1220, in NextButton_clicked
    self.showAddPrinterPage()
  File "/usr/share/hplip/ui4/setupdialog.py", line 678, in showAddPrinterPage
    self.readwriteFaxInformation()
  File "/usr/share/hplip/ui4/setupdialog.py", line 1043, in
readwriteFaxInformation
    self.fax_number = unicode(d.getPhoneNum())
  File "/usr/share/hplip/fax/soapfax.py", line 132, in getPhoneNum
    fax_setup = utils.XMLToDictParser().parseXML(stream.getvalue())
  File "/usr/share/hplip/base/utils.py", line 959, in parseXML
    parser.Parse(text.encode('utf-8'), True)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 313:
ordinal not in range(128)

The user says that replacing line 959 of utils.py
parser.Parse(text.encode('utf-8'), True)
by
parser.Parse(text, True)
fixes the problem.