favorites: don't block forever on sending a request
favorites: don't block forever on sending a request

Suggested by @akalin-keybase

Issue: #771

keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/kbfs