libreoffice/mmlfuzzer: Heap-use-after-free in sax_fastparser::FastSaxParserImpl::callbackStartElement

Project: git://anongit.freedesktop.org/libreoffice/core Detailed report: https://oss-fuzz.com/testcase?key=6282740317028352 Project: libreoffice Fuzzer: libFuzzerlibreofficemmlfuzzer Fuzz target binary: mmlfuzzer Job Type: libfuzzerasanlibreoffice Platform Id: linux Crash Type: Heap-use-after-fre...