cf->data tree may be NULL. Fixes #1911

diff --git a/src/main/conffile.c b/src/main/conffile.c
index 941f02e1f36e3cf95544800f5daa96802646dbb8..f2ebd4127446cb57292c345789837735c78922fa 100644 (file)
--- a/src/main/conffile.c
+++ b/src/main/conffile.c
@@ -4229,6 +4229,8 @@ int _cf_data_walk(CONF_SECTION *cs, char const *type, cf_walker_t cb, void *ctx)
                .ctx = ctx
        };
 
+       if (!cs->data_tree) return 0;
+
        return rbtree_walk(cs->data_tree, RBTREE_IN_ORDER, _cf_data_walk_cb, &cd_ctx);
 }