Fix warning

htdocs/product/class/product.class.php

@@ -1091,7 +1091,7 @@ class Product extends CommonObject
 				}
 
 				if (!$error) {
-					if ($conf->variants->enabled) {
+					if (!empty($conf->variants->enabled)) {
 						include_once DOL_DOCUMENT_ROOT.'/variants/class/ProductCombination.class.php';
 
 						$comb = new ProductCombination($this->db);

test/phpunit/ContactTest.php

@@ -334,25 +334,6 @@ class ContactTest extends PHPUnit\Framework\TestCase
     	return $result;
     }
 
-    /**
-	 *	testContactStatic
-	 *
-	 *	@return	void
-     */
-    public function testContactStatic()
-    {
-        global $conf,$user,$langs,$db;
-        $conf=$this->savconf;
-        $user=$this->savuser;
-        $langs=$this->savlangs;
-        $db=$this->savdb;
-
-        $localobject=new Contact($db);
-
-
-        return;
-    }
-
     /**
      * testContactGetFullAddress
      *