Select 'Other' in speed selection dropdown in gtkui causes error

[Ghent]

Open the GTK ui and click on speed and select other. Error follows:

NameError: global name 'os' is not defined Traceback (most recent call last):

File "/home/ghent/share/deluge/lib/python2.6/site-packages/deluge-1.3.0-dev-py2.6.egg/deluge/ui/gtkui/statusbar.py", line 387, in _on_set_download_speed

_("Set Maximum Download Speed"), _("KiB/s"), None, "downloading.svg", self.max_download_speed)

File "/home/ghent/share/deluge/lib/python2.6/site-packages/deluge-1.3.0-dev-py2.6.egg/deluge/ui/gtkui/common.py", line 163, in show_other_dialog

if os.path.splitext(image_filename)[1] == ".svg" and deluge.common.windows_check():

[Ghent]

Fixed by r5923.