[-] BO : Credit slips now appear in document section

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@11653 b9a71923-0436-4b27-9f14-aed3839534dd

classes/Collection.php

@@ -238,6 +238,7 @@ class CollectionCore implements Iterator, ArrayAccess, Countable
 	 */
 	public function getResults()
 	{
+		$this->getAll();
 		return $this->results;
 	}
 
@@ -457,4 +458,4 @@ class CollectionCore implements Iterator, ArrayAccess, Countable
 			$this->alias[$association] = 'a'.$this->alias_iterator++;
 		return $this->alias[$association];
 	}
-}
+}