libreoffice/mtpfuzzer: Crash in rtl_uStringbuffer_insert_ascii

Project: git://anongit.freedesktop.org/libreoffice/core Detailed report: https://oss-fuzz.com/testcase?key=6306492968861696 Project: libreoffice Fuzzer: libFuzzerlibreofficemtpfuzzer Fuzz target binary: mtpfuzzer Job Type: libfuzzerasanlibreoffice Platform Id: linux Crash Type: UNKNOWN WRITE Cras...