free_node: squash -Wunused-parameter warnings

diff --git a/cmd/tools/gmlparse.y b/cmd/tools/gmlparse.y
index 7dfc64e4dc6d3e9d3e75370ed0cb2b6ade9e898f..ff6f96d028e7ae9baaf29abd1783a0e84cd32f3c 100644 (file)
--- a/cmd/tools/gmlparse.y
+++ b/cmd/tools/gmlparse.y
@@ -45,6 +45,9 @@ static char* sortToStr (int sort);    /* forward decl */
 static void
 free_node (Dt_t*d, gmlnode* p, Dtdisc_t* ds)
 {
+    (void)d;
+    (void)ds;
+
     if (!p) return;
     if (p->attrlist) dtclose (p->attrlist);
     free (p);