Fix to re-process header if initial header is 100 Continue in Amazon MWS Fulfillment Outbound Shipment PHP client library

Client.php

<?php
...

//// Starting @ line 635 of FBAOutboundServiceMWS/Client.php

list($other, $responseBody) = explode("\r\n\r\n", $response, 2);
$other = preg_split("/\r\n|\n|\r/", $other);
list($protocol, $code, $text) = explode(' ', trim(array_shift($other)), 3);

// Re-check for new header after continue header.
if((int)$code == 100){
	list($other, $responseBody) = explode("\r\n\r\n", $responseBody, 2);
	$other = preg_split("/\r\n|\n|\r/", $other);
	list($protocol, $code, $text) = explode(' ', trim(array_shift($other)), 3);
}

...
?>

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