pkcs11-tool.c: fix compiler warning
pkcs11-tool.c: fix compiler warning

pkcs11-tool.c:2992:1: warning: control reaches end of non-void function
      [-Wreturn-type]
}
^

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