Workaround subject and issuer fields overflow
Workaround subject and issuer fields overflow

Structure `x509cert_info` fields `subject` and `issuer`
are doubled in size up to 512 bytes.

We have to use dynamic memory allocation
to completely overcome the issue.

Relates to OpenSC/OpenSC#1412.

fabled/OpenSC,CardContact/OpenSC,hongquan/OpenSC-main,mouse07410/OpenSC,OpenSC/OpenSC,mouse07410/OpenSC,dengert/OpenSC,hongquan/OpenSC-main,Jakuje/OpenSC,frankmorgner/OpenSC,metsma/OpenSC,viktorTarasov/OpenSC-SM,fabled/OpenSC,AktivCo/OpenSC,metsma/OpenSC,CardContact/OpenSC,rickyepoderi/OpenSC,LudovicRousseau/OpenSC,Jakuje/OpenSC,philipWendland/OpenSC,dengert/OpenSC,frankmorgner/OpenSC,hhonkanen/OpenSC,frankmorgner/OpenSC,metsma/OpenSC,viktorTarasov/OpenSC-SM,mouse07410/OpenSC,philipWendland/OpenSC,viktorTarasov/OpenSC-SM,fabled/OpenSC,AktivCo/OpenSC,CardContact/OpenSC,hhonkanen/OpenSC,philipWendland/OpenSC,AktivCo/OpenSC,fabled/OpenSC,hongquan/OpenSC-main,LudovicRousseau/OpenSC,LudovicRousseau/OpenSC,OpenSC/OpenSC,rickyepoderi/OpenSC,OpenSC/OpenSC,frankmorgner/OpenSC,hhonkanen/OpenSC,Jakuje/OpenSC,rickyepoderi/OpenSC,dengert/OpenSC,Jakuje/OpenSC