svnserve doesn't handle aborted authn

The new connection/thread handling in svnserve doesn't handle aborted
authn as follows:

  svnadmin create repo
  echo [general] >> repo/conf/svnserve.conf
  echo anon-access = >> repo/conf/svnserve.conf
  echo auth-access = write >> repo/conf/svnserve.conf
  echo password-db = passwd >> repo/conf/svnserve.conf
  echo pm = mp >> repo/conf/passwd
  svnserve -Tdr.

Now run

  svn info svn://localhost/repo --username pm

and interrupt/kill the client when prompted for a password. Do it again

  svn info svn://localhost/repo --username pm

and interrupt/kill again, svnserve SEGVs.

-- 
Philip Martin | Subversion Committer
WANdisco // *Non-Stop Data*