Clang warns if there are missing braces around a subobject
initializer. The most common idiom that triggers this is:
STRUCT s = {0};
which can be more simply written as:
STRUCT s = {};

BUG=505297

Change-Id: Ie9f9037a1ba4b6303daa30424cdc24c1ecf18896
Reviewed-on: https://chromium-review.googlesource.com/284160Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>