Don't try to use FanBuffer in PathInnerTriangulateOp if allocation failed.
Don't try to use FanBuffer in PathInnerTriangulateOp if allocation failed.

Bug: chromium:1264666
Change-Id: I49bb2b7bb99a80bc1189c150c978b8bd797c7a34
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/471016
Commit-Queue: Greg Daniel <39df0a804564ccb6cf75f18db79653821f37c1c5@google.com>
Reviewed-by: Chris Dalton <ef7fc3a08ada7d31f16e9a18b5f3c728256e041e@google.com>

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