Document has_ed25519_listing

src/or/or.h

@@ -2377,7 +2377,9 @@ typedef struct vote_routerstatus_t {
   char *version; /**< The version that the authority says this router is
                   * running. */
   unsigned int has_measured_bw:1; /**< The vote had a measured bw */
-  unsigned int has_ed25519_listing:1; /** DOCDOC */
+  /** True iff the vote included an entry for ed25519 ID, or included
+   * "id ed25519 none" to indicate that there was no ed25519 ID. */
+  unsigned int has_ed25519_listing:1;
   unsigned int ed25519_reflects_consensus:1; /** DOCDOC */
   uint32_t measured_bw_kb; /**< Measured bandwidth (capacity) of the router */
   /** The hash or hashes that the authority claims this microdesc has. */