libreoffice/htmlfuzzer: Crash in SwIndex::GetNext

Project: git://anongit.freedesktop.org/libreoffice/core Detailed report: https://oss-fuzz.com/testcase?key=5500490067476480 Project: libreoffice Fuzzer: libFuzzerlibreofficehtmlfuzzer Fuzz target binary: htmlfuzzer Job Type: libfuzzerubsanlibreoffice Platform Id: linux Crash Type: UNKNOWN READ...