message: [MemoryReader] Only dump bytes under verbose.
  <rdar://problem/45592295>
diff: @@ -1162,7 +1162,7 @@ SwiftLanguageRuntime::GetMemoryReader() {
  return false;
  }
  - if (log) {
  + if (log && log->GetVerbose()) {
  StreamString stream;
  for (uint64_t i = 0; i < size; i++) {
  stream.PutHex8(dest[i]);
  