Some more fixes to d3d stencils.

Change-Id: I8e6309b5ae794b0291ecc45267f67328a0f52829
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/296716
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
2 files changed