Initialize all the SkYUVAIndex fields in the wacky_yuv_formats GM

Change-Id: Ie5eb29f065cdf419209d68eab123cf5d3f7eceab
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/279216
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed