Fix: Assigning the return value of new by reference is deprecated

htdocs/includes/fpdf/fpdfi/pdf_parser.php

htdocs/includes/modules/propale/pdf_propale_azur.modules.php

htdocs/includes/nusoap/lib/class.soapclient.php

htdocs/includes/nusoap/lib/nusoap.php

htdocs/includes/nusoap/lib/nusoapmime.php

htdocs/includes/php_excelreader/excel_reader2.php

...includes/php_writeexcel/class.writeexcel_workbook.inc.php

htdocs/oscommerce_ws/ws_server/lib/class.soapclient.php

htdocs/oscommerce_ws/ws_server/lib/nusoap.php

htdocs/oscommerce_ws/ws_server/lib/nusoapmime.php