grok:grk_decompress_fuzzer: Crash in grk::SparseBuffer<6u, 6u>::alloc

Detailed Report: https://oss-fuzz.com/testcase?key=5352193955856384 Project: grok Fuzzing Engine: afl Fuzz Target: grkdecompressfuzzer Job Type: aflasangrok Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x6028000005a8 Crash State: grk::SparseBuffer::alloc bool...