hashtab: fix thinko in hashtab_delete()
hashtab: fix thinko in hashtab_delete()

mgjv/libusual,ifduyue/libusual,rabbitt/libusual,markokr/libusual,rabbitt/libusual,ifduyue/libusual,mgjv/libusual,rabbitt/libusual,ifduyue/libusual,markokr/libusual,markokr/libusual,ifduyue/libusual,mgjv/libusual,markokr/libusual,rabbitt/libusual,mgjv/libusual