preg_split bug on correctly formatted json by function interpretResponse

I'm getting interpretation errors on correctly return json because it doesn't have enough white space that the intrpretResponse function is expecting. I don't know why it need so many line breaks to work.

Error invoking the REST service REST Credential Service, operation login: Error interpreting response

The code is line 234 from httpclient.inc:

    $client->rawResponse = $response;
    $split = preg_split('/\r\n\r\n/', $response, 2);

The code needs to be:

    $client->rawResponse = $response;
    $split = preg_split('/\r\n/', $response, 2);

patch is attached.