skia/textblob_deserialize: Use-of-uninitialized-value in SkScalarSignAsScalar

Project: https://skia.googlesource.com/skia.git Detailed report: https://oss-fuzz.com/testcase?key=5671296839450624 Project: skia Fuzzer: libFuzzerskiatextblobdeserialize Fuzz target binary: textblobdeserialize Job Type: libfuzzermsanskia Platform Id: linux Crash Type: Use-of-uninitialized-value...