libpng:libpng_colormap_fuzzer: Use-of-uninitialized-value in png_image_read_background

Detailed Report: https://oss-fuzz.com/testcase?key=6440452420337664 Project: libpng Fuzzing Engine: libFuzzer Fuzz Target: libpngcolormapfuzzer Job Type: libfuzzermsanlibpng Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: pngimagereadbackground...