OSV-2021-60 Heap-buffer-overflow in H5O__sdspace_decode

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29517 Crash type: Heap-buffer-overflow READ 1 Crash state: H5Osdspacedecode H5Osdspaceshareddecode H5Oattrdecode...