Fix: fix not initialized variables

...cs/core/modules/member/labels/pdf_standardlabel.class.php

htdocs/core/modules/project/mod_project_universal.php

htdocs/core/modules/propale/mod_propale_saphir.php

htdocs/core/modules/propale/modules_propale.php

htdocs/core/modules/propale/pdf_propale_azur.modules.php

htdocs/core/modules/propale/pdf_propale_jaune.modules.php

htdocs/core/modules/societe/doc/doc_generic_odt.modules.php

htdocs/core/modules/societe/mod_codeclient_elephant.php

htdocs/core/modules/societe/mod_codecompta_aquarium.php

...core/modules/supplier_invoice/pdf/pdf_canelle.modules.php

...ules/supplier_order/mod_commande_fournisseur_orchidee.php

.../core/modules/supplier_order/pdf/pdf_muscadet.modules.php

htdocs/ecm/class/ecmdirectory.class.php

htdocs/expedition/class/expedition.class.php

htdocs/exports/class/export.class.php

htdocs/fichinter/class/fichinter.class.php

htdocs/fourn/class/fournisseur.commande.class.php

htdocs/fourn/class/fournisseur.facture.class.php

htdocs/install/upgrade2.php

htdocs/livraison/class/livraison.class.php