cmd/dfuse: fix a comment and a debug line.
cmd/dfuse: fix a comment and a debug line.

Change-Id: I28bdc9ece32921ae60e6376bcb3b97c3a701c151
Reviewed-on: https://upspin-review.git.corp.google.com/1925
Reviewed-by: Eduardo Pinheiro <55040cbb39ba395339ae7940d8da6cd97797a4a8@google.com>

upspin/upspin,upspin/upspin