LazFreeType: Hide range check errors in TrueType interpreter

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40102 4005530d-fff6-0310-9dd1-cebe43e6787f
LazFreeType: Fix flickering in the example

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40103 4005530d-fff6-0310-9dd1-cebe43e6787f