Enlarge the buffer for a line in a bw file

  o Minor bugfixes (dirauth):

    - Enlarge the buffer to read bw-auth generated files to avoid an

      issue when parsing the file in dirserv_read_measured_bandwidths().

      Bugfix on 0.2.2.1-alpha, fixes #14125.

dirserv_read_measured_bandwidths(const char *from_file,

                                 smartlist_t *routerstatuses)

{

  char line[256];

  char line[512];

  FILE *fp = tor_fopen_cloexec(from_file, "r");

  int applied_lines = 0;

  time_t file_time, now;