udev-builtin: path_id - don't pass NULL to udev_device_get_parent()

Being explicit about this makes the code easier to follow IMHO.

diff --git a/src/udev/udev-builtin-path_id.c b/src/udev/udev-builtin-path_id.c
index 0fa11f623087d962161dd4032fb04f054b42b9f9..4ca0a69d7dbefe66c30b0b8d0f0d28b78d1a0250 100644 (file)
--- a/src/udev/udev-builtin-path_id.c
+++ b/src/udev/udev-builtin-path_id.c
@@ -665,7 +665,8 @@ static int builtin_path_id(struct udev_device *dev, int argc, char *argv[], bool
                         supported_parent = true;
                 }
 
-                parent = udev_device_get_parent(parent);
+                if (parent)
+                        parent = udev_device_get_parent(parent);
         }
 
         /*