[wasm] Support recompilation if deserialization fails.

src/snapshot/code-serializer.cc

Index: src/snapshot/code-serializer.cc
diff --git a/src/snapshot/code-serializer.cc b/src/snapshot/code-serializer.cc
index 16044a505953686c58d0474803458a2d4bacb606..9712d79e19ed27c214112d4476bd9d256ddb3347 100644
--- a/src/snapshot/code-serializer.cc
+++ b/src/snapshot/code-serializer.cc
@@ -340,6 +340,7 @@ SerializedCodeData::SerializedCodeData(const List<byte>* payload,
 
 SerializedCodeData::SanityCheckResult SerializedCodeData::SanityCheck(
     Isolate* isolate, uint32_t expected_source_hash) const {
+  if (this->size_ < kHeaderSize) return INVALID_HEADER;
   uint32_t magic_number = GetMagicNumber();
   if (magic_number != ComputeMagicNumber(isolate)) return MAGIC_NUMBER_MISMATCH;
   uint32_t version_hash = GetHeaderValue(kVersionHashOffset);