Fix token label formatting
Fix token label formatting

PKCS#15 token label may be padded with spaces, trim it when making a PKCS#11 token label in order not to loose closing parenthesis.
I would actually prefer for the token label to be "myCard (User PIN)" instead of current "User PIN (myCard)"

before:
$ pkcs11-tool --list-slots
Available slots:
Slot 0 (0x0): OMNIKEY AG CardMan 3121 00 00
  token label        : User PIN (myCard
...

after:
$ pkcs11-tool --list-slots
Available slots:
Slot 0 (0x0): OMNIKEY AG CardMan 3121 00 00
  token label        : User PIN (myCard)
...

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