laz2xmlconfig: fixed crash

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47153 4005530d-fff6-0310-9dd1-cebe43e6787f
laz2xmlconfig: fixed crash

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47154 4005530d-fff6-0310-9dd1-cebe43e6787f