build: avoid warning with extra parenthesis

diff --git a/bacula/src/stored/generic_driver.c b/bacula/src/stored/generic_driver.c
index e5bea443269e40ade070d41305d9d7d6ad63b003..3a19982c967182e063ba2c1b7e2023e4f37cad6b 100644 (file)
--- a/bacula/src/stored/generic_driver.c
+++ b/bacula/src/stored/generic_driver.c
@@ -1150,7 +1150,7 @@ bool generic_driver::clean_cloud_volume(const char *VolumeName, cleanup_cb_type
       }
    }
 
-   return (ret|rtn == 0);
+   return ((ret|rtn) == 0);
 }
 
 struct get_cloud_volume_parts_list_read_cb_arg {