SynEdit: Ifdef Markup: clean up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41189 4005530d-fff6-0310-9dd1-cebe43e6787f
SynEdit: Ifdef Markup: SourceEditor: Do not invalidate, if all node states are going to be written

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41190 4005530d-fff6-0310-9dd1-cebe43e6787f