OSV-2020-769 Heap-buffer-overflow in perfetto::trace_processor::ClockTracker::ConvertSlowpath

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23149 Crash type: Heap-buffer-overflow READ 8 Crash state: perfetto::traceprocessor::ClockTracker::ConvertSlowpath perfetto::traceprocessor::ClockTracker::Convert perfetto::traceprocessor::ClockTracker::ToTraceTime...