Add test case for error found by fuzzer for ZDICT_trainFromBuffer_legacy#239

folkertdev merged 4 commits intomaintrifectatechfoundation/libzstd-rs-sys:mainfrom

train-from-buffer-legacy-fuzzed-errortrifectatechfoundation/libzstd-rs-sys:train-from-buffer-legacy-fuzzed-errorCopy head branch name to clipboard