PDFBOX-678: fix build

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1616350 13f79535-47bb-0310-9956-ffa450edef68
PDFBOX-678: fix intersectClippingPath

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1616355 13f79535-47bb-0310-9956-ffa450edef68