codetools: safety clean up on exception

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40681 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: formatting

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40682 4005530d-fff6-0310-9dd1-cebe43e6787f