OSV-2022-972 Use-of-uninitialized-value in SkFindQuadMaxCurvature

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51876 Crash type: Use-of-uninitialized-value Crash state: SkFindQuadMaxCurvature AAHairlineOp::onPrepareDraws GrMeshDrawOp::onPrepare...