The goal was to enable -Wzero-as-null-pointer-constant. Unfortunately,
this was thwarted by VK_NULL_HANDLE which is defined as 0ULL in the
Vulkan headers. It might be possible to enable the warning for a subset
of Skia, but not for the parts which interface with Vulkan.
Change-Id: Id27f5f57d9b2676d18f319f443fdf8bb5d4fb89d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/505801
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>