skia/api_mock_gpu_canvas: Heap-use-after-free in SkRefCntBase::unref

Project: https://skia.googlesource.com/skia.git Detailed report: https://oss-fuzz.com/testcase?key=5682104804311040 Project: skia Fuzzer: libFuzzerskiaapimockgpucanvas Fuzz target binary: apimockgpucanvas Job Type: libfuzzerasanskia Platform Id: linux Crash Type: Heap-use-after-free WRITE 4 Crash...