missing hookmanager like others doc_generic*odt modules

[rycks]

All doc_generic*odt modules files have hookmanager bloc like that:

		// Add odtgeneration hook
		if (!is_object($hookmanager)) {
			include_once DOL_DOCUMENT_ROOT.'/core/class/hookmanager.class.php';
			$hookmanager = new HookManager($this->db);
		}
		$hookmanager->initHooks(array('odtgeneration'));
		global $action;

but thoses 4 files does not ! then for example there is no hook call for odt generation files on that 4 cases !