unix-socket.hon commit check-non-portable-shell.pl: `wc -l` may have leading WS (7dbe8c8)
   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 */