IDE: fixed crash on closing compiler options

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41649 4005530d-fff6-0310-9dd1-cebe43e6787f
fpvectorial: Greatly improves the ellipse arc drawing, now it finally works in many cases =)

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41650 4005530d-fff6-0310-9dd1-cebe43e6787f