Fixed #2153 -- display debugging template even if no stack frame is found.
Fixed #2153 -- display debugging template even if no stack frame is found.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%403127

Belgabor/django,Belgabor/django,Belgabor/django