poppler:pdf_fuzzer: Use-of-uninitialized-value in Splash::clear

Detailed Report: https://oss-fuzz.com/testcase?key=5583095026221056 Project: poppler Fuzzing Engine: libFuzzer Fuzz Target: pdffuzzer Job Type: libfuzzermsanpoppler Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: Splash::clear SplashOutputDev::tilingPatternFi...