Propagate validation errors

tests/SerializationTest.cpp

Index: tests/SerializationTest.cpp
diff --git a/tests/SerializationTest.cpp b/tests/SerializationTest.cpp
index 24cab3f3fcb6f7f1b4de02729f042be7d003e22f..9e407015b97e1b13a9053984498165642a7a19c9 100644
--- a/tests/SerializationTest.cpp
+++ b/tests/SerializationTest.cpp
@@ -566,6 +566,7 @@ DEF_TEST(Serialization, reporter) {
         // Deserialize picture
         SkValidatingReadBuffer reader(static_cast<void*>(data.get()), size);
         sk_sp<SkPicture> readPict(SkPicture::MakeFromBuffer(reader));
+        REPORTER_ASSERT(reporter, reader.isValid());
         REPORTER_ASSERT(reporter, readPict.get());
     }