mupdf/pdf_fuzzer: Heap-use-after-free in fz_fin_cached_color_converter

Project: git://git.ghostscript.com/mupdf.git Detailed report: https://oss-fuzz.com/testcase?key=4866555528609792 Project: mupdf Fuzzer: aflmupdfpdffuzzer Fuzz target binary: pdffuzzer Job Type: aflasanmupdf Platform Id: linux Crash Type: Heap-use-after-free READ 8 Crash Address: 0x6060000005f8...