Wizard with field binary always display loading

[Christophe CHAUVET]

In 6.0 Rev 4647
I have a wizard with field binary, when click on a button to launch treatement and the function associate return and act_window_close, the wizard never close an always display "Loading"

to reproduce problem, go to /bin/addons/base/module/wizard/base_import_language.py

and replace line 62 with

return {}

by

return {'type': 'ir.actions.act_window_close'}

And execute this wizard on the web client (works correctly on the GTK-Client)

[Xavier Fernandez http://www.smile.fr (xav-fernandez)]

same on webclient rev 4589, when you save any form containing a binary field (for instance, to change the logo of your company), the loading never stops and the page does not reload.