small fix
small fix


git-tfs-id: [https://tfs.codeplex.com/tfs/TFS05/]$/ZXingNet/trunk;C72507

micjahn/ZXing.Net,bsoja/ZXing.Net,micjahn/ZXing.Net,DHMechatronicAG/ZXing.Net,DHMechatronicAG/ZXing.Net,DHMechatronicAG/ZXing.Net,micjahn/ZXing.Net,bsoja/ZXing.Net,bsoja/ZXing.Net