Fixing NPE in tests addLocalPlugin:248
Fixing NPE in tests addLocalPlugin:248

Fix for the NPE mentioned in https://github.com/crawljax/crawljax/pull/346#issuecomment-25814980
crawljax/crawljax,xujun10110/crawljax,cschroed-usgs/crawljax,crawljax/crawljax,cschroed-usgs/crawljax,adini121/crawljax,xujun10110/crawljax,ntatsumi/crawljax,cschroed-usgs/crawljax,xujun10110/crawljax,robertzas/crawljax,fivejjs/crawljax,crawljax/crawljax,xujun10110/crawljax,adini121/crawljax,crawljax/crawljax,ntatsumi/crawljax,adini121/crawljax,ntatsumi/crawljax,bigplus/crawljax,fivejjs/crawljax,robertzas/crawljax,robertzas/crawljax,robertzas/crawljax,fivejjs/crawljax,fivejjs/crawljax,bigplus/crawljax,cschroed-usgs/crawljax,adini121/crawljax,bigplus/crawljax,ntatsumi/crawljax,bigplus/crawljax