use (void) for empty parameter lists to suppress compiler wanings

diff --git a/lib/graph/libgraph.h b/lib/graph/libgraph.h
index 5d411f1e09a53b4f1171e085d57f1476e130eaf5..ade7e9e8a20615800a97b44496d8a480408b0eaa 100644 (file)
--- a/lib/graph/libgraph.h
+++ b/lib/graph/libgraph.h
@@ -167,7 +167,7 @@ extern "C" {
     void agpushproto(Agraph_t *);
     char *agstrdup_html(char *s);
     int agtoken(char *);
-    int aglinenumber ();
+    int aglinenumber(void);
     void agwredge(Agraph_t *, FILE *, Agedge_t *, int);
     void agwrnode(Agraph_t *, FILE *, Agnode_t *, int, int);
     extern Dtdisc_t agNamedisc, agNodedisc, agOutdisc, agIndisc,