uncomment an accidentally commented line in protocol/Makefile
uncomment an accidentally commented line in protocol/Makefile

Happened here: https://github.com/keybase/client/pull/4891

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