unix-socket.hon commit tree-diff: convert diff_root_tree_sha1() to just call diff_tree_sha1 with old=NULL (0b707c3)
   1#ifndef UNIX_SOCKET_H
   2#define UNIX_SOCKET_H
   3
   4int unix_stream_connect(const char *path);
   5int unix_stream_listen(const char *path);
   6
   7#endif /* UNIX_SOCKET_H */