Fixes issue 2238.  Refreshing the TypeOracle when errors are present could cause the removal of types which do not have legitimate errors.

Patch by: spoon & mmendez (pair prog)
Review by: mmendez, scottb, spoon (desk check)

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@2386 8db76d5a-ed1c-0410-87a9-c151d255dfc7
3 files changed