OSV-2022-983 Heap-buffer-overflow in SkPathPriv::IsRectContour

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51909 Crash type: Heap-buffer-overflow READ 4 Crash state: SkPathPriv::IsRectContour SkPath::isRect SkCanvas::clipPath...