authentic: Clean private data on error
authentic: Clean private data on error

Thanks oss-fuzz

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23786

philipWendland/OpenSC,mouse07410/OpenSC,philipWendland/OpenSC,LudovicRousseau/OpenSC,fabled/OpenSC,mouse07410/OpenSC,fabled/OpenSC,dengert/OpenSC,Jakuje/OpenSC,hongquan/OpenSC-main,metsma/OpenSC,LudovicRousseau/OpenSC,hongquan/OpenSC-main,frankmorgner/OpenSC,AktivCo/OpenSC,LudovicRousseau/OpenSC,frankmorgner/OpenSC,philipWendland/OpenSC,frankmorgner/OpenSC,hongquan/OpenSC-main,AktivCo/OpenSC,OpenSC/OpenSC,metsma/OpenSC,fabled/OpenSC,mouse07410/OpenSC,dengert/OpenSC,Jakuje/OpenSC,Jakuje/OpenSC,fabled/OpenSC,dengert/OpenSC,Jakuje/OpenSC,OpenSC/OpenSC,OpenSC/OpenSC,metsma/OpenSC,frankmorgner/OpenSC,AktivCo/OpenSC