pkcs11-tool: fix invalid parameter for 'find-mechanism'
pkcs11-tool: fix invalid parameter for 'find-mechanism'

Fixes #700

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