mupdf:pdf_fuzzer: Heap-buffer-overflow in eval_sample_func

Project: git://git.ghostscript.com/mupdf.git Detailed Report: https://oss-fuzz.com/testcase?key=4590883746414592 Project: mupdf Fuzzing Engine: honggfuzz Fuzz Target: pdffuzzer Job Type: honggfuzzasanmupdf Platform Id: linux Crash Type: Heap-buffer-overflow READ 4 Crash Address: 0x51400020c9d0...