Fixed NPE on destroy of invalid Servlet error. This is a weird corner case caused by shutdown hook from the servlet container destroying GuiceFilter when one of its filters or servlets was "out of service", i.e. bound incorrectly.

git-svn-id: https://google-guice.googlecode.com/svn/trunk@825 d779f126-a31b-0410-b53b-1d3aecad763e
2 files changed