[-] WS : Fix id_shop to not being mandatory

classes/webservice/WebserviceRequest.php

@@ -777,8 +777,12 @@ class WebserviceRequestCore
 				return true;
 			}
 		}
-
+		else
-		$this->setError(404, 'This shop id doesn\'t exist', 129);
+		{
+			self::$shopIDs[] = Context::getContext()->shop->id;
+			return true;
+		}
+		$this->setError(404, 'This shop id does not exist', 999);
 		return false;
 	}