buffet: fix -Winconsistent-missing-override warning.

BUG=chromium:453077
TEST=FEATURES="test" emerge-amd64-generic buffet

Change-Id: Ibf5587a47a8dbe5d83f313b88576826cbeae3005
Reviewed-on: https://chromium-review.googlesource.com/244060
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Yunlian Jiang <yunlian@chromium.org>
1 file changed
tree: c1d58853034ef4af70a9f466811cf655de5bf377
  1. buffet/