Fix use-after-free bug in AbstractMap.remove()

Fixes issue 7856.

Change-Id: I4d3d92d7aaf13e499c8e12b680ecae66864f8a3a
Review-Link: https://gwt-review.googlesource.com/#/c/1740/

Review by: goktug@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@11461 8db76d5a-ed1c-0410-87a9-c151d255dfc7
1 file changed