[b7d2b7d2] introduces heap-use-after-free in 4 oss-fuzz samples

clusterfuzz-testcase-dav1d_fuzzer-5748221712793600

clusterfuzz-testcase-minimized-dav1d_fuzzer-5674936551604224

clusterfuzz-testcase-minimized-dav1d_fuzzer-5692418159017984

clusterfuzz-testcase-minimized-dav1d_fuzzer-5740590025670656