+++ This bug was initially created as a clone of Bug #452476 +++

Description of problem:
From rhn-satellite:
Hi again and once again, thanks for the tips.

I have been experimenting with the script, and find that for our Lab Satellite
here we get the following traceback for certain channels:


Channel: Red Hat Desktop (v. 3 for x86) Label: rhel-i386-desktop-3
Traceback (most recent call last):
  File "repomd-precache.py", line 28, in ?
    repo.get_repomd_file()
  File "/usr/share/rhn/server/repomd/repository.py", line 326, in get_repomd_file
    self.repository.get_updateinfo_xml_file(),
  File "/usr/share/rhn/server/repomd/repository.py", line 106, in
get_updateinfo_xml_file
    viewobj.write_updateinfo()
  File "/usr/share/rhn/server/repomd/view.py", line 305, in write_updateinfo
    self.fileobj.write('\n'.join(self._get_erratum(erratum)))
  File "/usr/share/rhn/server/repomd/view.py", line 289, in _get_erratum
    output.append("    <description>%s</description>"
TypeError: cannot concatenate 'str' and 'NoneType' objects 

Version-Release number of selected component (if applicable):
520

How reproducible:
the bug is obvious

Steps to Reproduce:
1. sync some channel with errate which has some synopsis and empty description
(or reverse: some description and none synopsis)
2. regenerate repomd cache either by requesting data from it by client or
regenerate using rhnChannel.channel_info API call.
  
Actual results:
Traceback

Expected results:
Works as charm.

-- Additional comment from msuchy on 2008-06-23 05:24 EST --
Fixed in trunk rev. 174335