Fix mask applied to SkPath::fFillType to fix fuzzer bug

src/core/SkPath.cpp

Index: src/core/SkPath.cpp
diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index f5b53fcc00e085785be61a23a0e9c601f891e6fb..50789b42eb657f4b4f69cac9e023ee142a37d078 100644
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -2058,7 +2058,7 @@ size_t SkPath::readFromMemory(const void* storage, size_t length) {
     }
 
     fConvexity = (packed >> kConvexity_SerializationShift) & 0xFF;
-    fFillType = (packed >> kFillType_SerializationShift) & 0xFF;
+    fFillType = (packed >> kFillType_SerializationShift) & 0x3;
     uint8_t dir = (packed >> kDirection_SerializationShift) & 0x3;
     fIsVolatile = (packed >> kIsVolatile_SerializationShift) & 0x1;
     SkPathRef* pathRef = SkPathRef::CreateFromBuffer(&buffer);