poppler:qt_annot_fuzzer: Use-of-uninitialized-value in FlateEncoder::getChar

Detailed Report: https://oss-fuzz.com/testcase?key=4906624897056768 Project: poppler Fuzzing Engine: libFuzzer Fuzz Target: qtannotfuzzer Job Type: libfuzzermsanpoppler Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: FlateEncoder::getChar PDFDoc::writeObject...