OSV-2023-181 Heap-double-free in xsltCompileStepPattern

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57061 Crash type: Heap-double-free Crash state: xsltCompileStepPattern xsltCompileRelativePathPattern xsltCompilePatternInternal...