Chrome plugin: don't use an iterator after the underlying entry has been freed.
Rebuilt Windows DLL and created a release.
(This patch might help on Linux and Mac as well, but for safety I'm not
updating them yet.)

Review at http://gwt-code-reviews.appspot.com/1861803

Review by: mdempsky@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@11364 8db76d5a-ed1c-0410-87a9-c151d255dfc7