poppy: initializing next_menu_idx to current_menu_idx

Get rid of uninitialized variable warning.

BUG=chrome-os-partner:61275
BRANCH=None
TEST=make cgpt WERROR= STATIC=1

Change-Id: I31faa557406c6a90cfdea8571620675c81c0c0ec
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/440432
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
1 file changed