fixed gcc warning about comparison being always true
fixed gcc warning about comparison being always true

dago/libpsl,dkg/libpsl,darnir/libpsl,dkg/libpsl,rockdaboot/libpsl,rockdaboot/libpsl,rockdaboot/libpsl,darnir/libpsl,darnir/libpsl,dago/libpsl,dago/libpsl