libkmod-list: allow to append an empty list

diff --git a/libkmod/libkmod-list.c b/libkmod/libkmod-list.c
index 285c817516694cd8f0d9d579d3a17c48e8fca35d..982c4ab6aa6ccab53c85a421aadae0b18daa3371 100644 (file)
--- a/libkmod/libkmod-list.c
+++ b/libkmod/libkmod-list.c
@@ -181,6 +181,9 @@ struct kmod_list *kmod_list_append_list(struct kmod_list *list1,
        if (list1 == NULL)
                return list2;
 
+       if (list2 == NULL)
+               return list1;
+
        list_node_append_list(&list1->node, &list2->node);
 
        return list1;