Enlarge the buffer for a line in a bw file

changes/bug14125

@@ -0,0 +1,5 @@
+  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.
+

src/or/dirserv.c

@@ -2487,7 +2487,7 @@ int
 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;