message: Fix candidate server encoding
diff: @@ -29,6 +29,7 @@ export function makeEventPermalink(roomId, eventId) {
  // If the roomId isn't actually a room ID, don't try to list the servers.
  // Aliases are already routable, and don't need extra information.
  if (roomId[0] !== '!') return permalinkBase;
  +
  const serverCandidates = pickServerCandidates(roomId);
  return `${permalinkBase}${encodeServerCandidates(serverCandidates)}`;
  }
  @@ -53,7 +54,7 @@ export function makeGroupPermalink(groupId) {
  }
  export function encodeServerCandidates(candidates) {
  - if (!candidates) return '';
  + if (!candidates || candidates.length === 0) return '';
  return `?via=${candidates.map(c => encodeURIComponent(c)).join("&via=")}`;
  }
  