varint.hon commit switch: reject if some operation is in progress (c45f0f5)
   1#ifndef VARINT_H
   2#define VARINT_H
   3
   4extern int encode_varint(uintmax_t, unsigned char *);
   5extern uintmax_t decode_varint(const unsigned char **);
   6
   7#endif /* VARINT_H */