Description of problem: 
When Kyum encounters packages with formatting issues it causes an error with a
traceback, and issues a code 1. This prevents listing or updating the packages
below the one with the formatting which causes the error. The error occurs only
in Kyum and does not occur using the current Yum revision in text mode 

Version-Release number of selected component (if applicable):
kyum-0.7.5-7.fc7

How reproducible:
always

Steps to Reproduce:
1. enable repositories with package formatting issues (all, including fedora,
fedora updates)
2. kyum list updates

  
Actual results:
*** Traceback (most recent call last):
***   File "/usr/bin/yum", line 29, in <module>
***     yummain.main(sys.argv[1:])
***   File "/usr/share/yum-cli/yummain.py", line 105, in main
***     result, resultmsgs = base.doCommands()
***   File "/usr/share/yum-cli/cli.py", line 282, in doCommands
***     return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd,
self.extcmds)
***   File "/usr/share/yum-cli/yumcommands.py", line 171, in doCommand
***     rup = base.listPkgs(ypl.updates, 'Updated Packages', basecmd)
***   File "/usr/share/yum-cli/output.py", line 129, in listPkgs
***     self.infoOutput(pkg)
***   File "/usr/share/yum-cli/output.py", line 100, in infoOutput
***     print _("Description:\n%s") % enc(pkg.description)
***   File "/usr/share/yum-cli/output.py", line 84, in enc
***     if len(s) > 0:
*** TypeError: object of type 'NoneType' has no len()
Process exited normally with code 1.

Expected results:
Process exited normally with code 0.

Additional info:
See  Bugzilla Bug 249994: yum updating --> TypeError: list objects are
unhashable for similar Yum issue in text mode.