OSV-2022-1071 Heap-use-after-free in xmlXIncludeCopyXPointer

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52554 Crash type: Heap-use-after-free READ 4 Crash state: xmlXIncludeCopyXPointer xmlXIncludeDoProcess xmlXIncludeProcessTreeFlagsData...