Improve handling of degenerate paths in AAHairLinePathRenderer::bloat_quad
Improve handling of degenerate paths in AAHairLinePathRenderer::bloat_quad

Bug: 1265199
Change-Id: I217d75377c33940cdbabba278ee1ac06e94e177f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469899
Commit-Queue: Robert Phillips <95e8ac5504948c7bf91b22c16a8dbb7ae7c66bfd@google.com>
Reviewed-by: Jim Van Verth <509afb0bfbb23ecaaf1fb3323209f531b45e75a6@google.com>

google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia