Improve performance in BeforeMessageSend()

[adnanrahat]

In AzureStorageAttachment::BeforeMessageSend(), the code looks like as

await InitializeClient().ConfigureAwait(false);
if (!configuration.MessageMaxSizeReachedCriteria(message))
{
  return message;
}

I think bringing down the InitializeClient() after the MaxMessage check should improve the performance of the SendMessage call(). Other way to say, for smaller message, we won't initialize the blob clients anymore. Thoughts?

[SeanFeldman]

Done. Thank you @adnanrahat.
This is what's done in AfterMessageReceive and should have been done in BeforeMessageSend as well.