middleware: don't barf when wrapped generater yields no items.

Tres Seaver

2013-12-17 19d2190b6240a7b7a9fdfc536e6ec865cd5ddf07

1
2
3
4
5
6
7
8
*.pyc
*.egg-info
.coverage
docs/.build
.tox
coverage.xml
nosetests.xml
docs/_build