anchordocking: fixed freeing unneeded controls

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46753 4005530d-fff6-0310-9dd1-cebe43e6787f
fpcunit: after a test run only nodes with errors become expanded, all nodes in the tree (test units) are collapsed by default, patch 26985

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46754 4005530d-fff6-0310-9dd1-cebe43e6787f