Created attachment 605939 [details]
Added explicit string constructor call

Description of problem:
--blocked command line option doesn't handle its arguments properly

Version-Release number of selected component (if applicable):
python-bugzilla-0.7.0-1.fc17.noarch

Steps to Reproduce:
1. Login
2. Try to file new bug with --blocked set to some tracking bug id
3. Observe results
  
Actual results:
Exception raised

Expected results:
Should work

Additional info:
Traceback (most recent call last):
  File "/usr/bin/bugzilla", line 808, in <module>
    main()
  File "/usr/bin/bugzilla", line 588, in main
    data[a] = i.split(',')
AttributeError: 'NoneType' object has no attribute 'split'