Fix: contract use "total_vat" instead "total_tva"

htdocs/core/class/commondocgenerator.class.php

@@ -366,13 +366,13 @@ abstract class CommonDocGenerator
 		$array_key.'_payment_term'=>($outputlangs->transnoentitiesnoconv('PaymentCondition'.$object->cond_reglement_code)!='PaymentCondition'.$object->cond_reglement_code?$outputlangs->transnoentitiesnoconv('PaymentCondition'.$object->cond_reglement_code):$object->cond_reglement),
 
 		$array_key.'_total_ht_locale'=>price($object->total_ht, 0, $outputlangs),
-		$array_key.'_total_vat_locale'=>price($object->total_tva, 0, $outputlangs),
+		$array_key.'_total_vat_locale'=>(! empty($object->total_vat)?price($object->total_vat, 0, $outputlangs):price($object->total_tva, 0, $outputlangs)),
 		$array_key.'_total_localtax1_locale'=>price($object->total_localtax1, 0, $outputlangs),
 		$array_key.'_total_localtax2_locale'=>price($object->total_localtax2, 0, $outputlangs),
 		$array_key.'_total_ttc_locale'=>price($object->total_ttc, 0, $outputlangs),
 		$array_key.'_total_discount_ht_locale' => price($object->getTotalDiscount(), 0, $outputlangs),
 		$array_key.'_total_ht'=>price2num($object->total_ht),
-		$array_key.'_total_vat'=>price2num($object->total_tva),
+		$array_key.'_total_vat'=>(! empty($object->total_vat)?price2num($object->total_vat):price2num($object->total_tva)),
 		$array_key.'_total_localtax1'=>price2num($object->total_localtax1),
 		$array_key.'_total_localtax2'=>price2num($object->total_localtax2),
 		$array_key.'_total_ttc'=>price2num($object->total_ttc),