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=5664837016748032 Project: mupdf Fuzzer: libFuzzermupdfpdffuzzer Fuzz target binary: pdffuzzer Job Type: libfuzzerasanmupdf Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 4 Crash Address:...