mupdf:pdf_fuzzer: Use-of-uninitialized-value in FT_Atan2

Detailed Report: https://oss-fuzz.com/testcase?key=4850174630625280 Project: mupdf Fuzzing Engine: libFuzzer Fuzz Target: pdffuzzer Job Type: libfuzzermsanmupdf Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: FTAtan2 FTStrokerCubicTo FTStrokerParseOutline...