cope with lack of root svg element

diff --git a/src/svgtiny.c b/src/svgtiny.c
index e42077a79879eb709a2c3b2258bb1edbf03e6e58..bd9aeaa89486ddc873249744feed390d78042801 100644 (file)
--- a/src/svgtiny.c
+++ b/src/svgtiny.c
@@ -188,6 +188,12 @@ svgtiny_code svgtiny_parse(struct svgtiny_diagram *diagram,
                dom_node_unref(document);
                return svgtiny_LIBDOM_ERROR;
        }
+        if (svg == NULL) {
+                /* no root svg element */
+                dom_node_unref(document);
+               return svgtiny_SVG_ERROR;
+        }
+
        exc = dom_node_get_node_name(svg, &svg_name);
        if (exc != DOM_NO_ERR) {
                dom_node_unref(svg);