oberthur: Handle more memory issues during initialization
oberthur: Handle more memory issues during initialization

Thanks oss-fuzz

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31540
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31448

philipWendland/OpenSC,mouse07410/OpenSC,LudovicRousseau/OpenSC,metsma/OpenSC,metsma/OpenSC,OpenSC/OpenSC,fabled/OpenSC,OpenSC/OpenSC,mouse07410/OpenSC,dengert/OpenSC,frankmorgner/OpenSC,Jakuje/OpenSC,philipWendland/OpenSC,dengert/OpenSC,frankmorgner/OpenSC,Jakuje/OpenSC,frankmorgner/OpenSC,dengert/OpenSC,OpenSC/OpenSC,Jakuje/OpenSC,fabled/OpenSC,fabled/OpenSC,LudovicRousseau/OpenSC,metsma/OpenSC,Jakuje/OpenSC,philipWendland/OpenSC,LudovicRousseau/OpenSC,mouse07410/OpenSC,frankmorgner/OpenSC,fabled/OpenSC