find_slot_by_slotlabel(): also check the slot is present
find_slot_by_slotlabel(): also check the slot is present

Thanks to Aro RANAIVONDRAMBOLA for the patch
http://www.opensc-project.org/pipermail/opensc-user/2009-August/003231.html


milgner/pam_pkcs11,milgner/pam_pkcs11,OpenSC/pam_pkcs11,OpenSC/pam_pkcs11,milgner/pam_pkcs11