Fix template variables not being expanded in irkerbridge templates when the field is empty for some reason (e.g. null log message).
Fix template variables not being expanded in irkerbridge templates when the
field is empty for some reason (e.g. null log message).

This change causes them to be expanded to "<null>"

* tools/server-side/svnpubsub/irkerbridge.py
  (fill_in_extra_args): Look for empty fields of the Revision object and
    set them to "<null>" before generating output data.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1424776 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion