[Serialization] Simplify NDEBUG logic skipping a record

Author: jrose-apple

lib/Serialization/Deserialization.cpp

@@ -143,14 +143,9 @@ static void skipRecord(llvm::BitstreamCursor &cursor, unsigned recordKind) {
   auto next = cursor.advance(AF_DontPopBlockAtEnd);
   assert(next.Kind == llvm::BitstreamEntry::Record);
 
-#if NDEBUG
-  cursor.skipRecord(next.ID);
-#else
-  SmallVector<uint64_t, 64> scratch;
-  StringRef blobData;
-  unsigned kind = cursor.readRecord(next.ID, scratch, &blobData);
+  unsigned kind = cursor.skipRecord(next.ID);
   assert(kind == recordKind);
-#endif
+  (void)kind;
 }
 
 void ModuleFile::fatal(llvm::Error error) {