Comment 3 for bug 383759

fwiw, without the patch, Gwibber fails to start with the traceback:

Traceback (most recent call last):
  File "./bin/gwibber", line 57, in <module>
    client.Client()
  File "/home/cmsj/code/scratch/gwibber/gwibber/client.py", line 106, in __init__
    self.w = GwibberClient()
  File "/home/cmsj/code/scratch/gwibber/gwibber/client.py", line 186, in __init__
    self.setup_ui()
  File "/home/cmsj/code/scratch/gwibber/gwibber/client.py", line 250, in setup_ui
    self.content_view = gwui.MessageStreamView(self.preferences["theme"], self)
  File "/home/cmsj/code/scratch/gwibber/gwibber/gwui.py", line 259, in __init__
    self.load_fonts(resources.get_font())
  File "/home/cmsj/code/scratch/gwibber/gwibber/gwui.py", line 270, in load_fonts
    self.settings.set_property("default-font-size", (int(fsize) + 2))
ValueError: invalid literal for int() with base 10: '6.5'