codetools: on variable only valid in the on block, bug 24494

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41842 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: comments

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41844 4005530d-fff6-0310-9dd1-cebe43e6787f