libreoffice/lwpfuzzer: Bad-cast to LwpFrib from XFParagraph in LwpChangeMgr::ConvertAllChange

Project: git://anongit.freedesktop.org/libreoffice/core Detailed report: https://oss-fuzz.com/testcase?key=4767866357284864 Project: libreoffice Fuzzer: libFuzzerlibreofficelwpfuzzer Fuzz target binary: lwpfuzzer Job Type: libfuzzerubsanlibreoffice Platform Id: linux Crash Type: Bad-cast Crash...