squash a -Wunused-parameter warning

diff --git a/plugin/core/gvrender_core_vml.c b/plugin/core/gvrender_core_vml.c
index b4c21a6b2446bff4bf985c7fb74088d4e6a6de18..59dce669f0e641850050cf6cc708286777a28bfb 100644 (file)
--- a/plugin/core/gvrender_core_vml.c
+++ b/plugin/core/gvrender_core_vml.c
@@ -351,6 +351,8 @@ static void vml_end_graph(GVJ_t * job)
 static void
 vml_begin_anchor(GVJ_t * job, char *href, char *tooltip, char *target, char *id)
 {
+    (void)id;
+
     gvputs(job, "<a");
     if (href && href[0])
        gvprintf(job, " href=\"%s\"", html_string(href));