win32: trial to fix regression from r41513. issue #23255 and probably #24549


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41536 4005530d-fff6-0310-9dd1-cebe43e6787f
fpvectorial: Fixes exception in loading head.svg, improves svg support

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41537 4005530d-fff6-0310-9dd1-cebe43e6787f