port rev. 2821: Issue 1712 fix test case too
port rev. 2821:
Issue 1712 fix test case too

git-svn-id: 98f681d7a2907ee2a41df434552134740bcc8829@86720 81fbe566-5dc4-48c1-bdea-7421811ca204

dawidcieszynski/ZXing.Net,dawidcieszynski/ZXing.Net