Fix MSVS 2013 build Implicit conversion from int to boolean was generating a warning on MSVS 2013. Still useful to keep support around at least while build instructions recommend using MSVS 2013. Change-Id: I6975198f4bc6740a745454375f422d9c67ffaea5 Reviewed-on: https://chromium-review.googlesource.com/329070 Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>