circogen edgelist: squash -Wunused-parameter warnings

These functions are used in a `Dtdisc_t` structure so need to conform to
particular type signatures.

diff --git a/lib/circogen/edgelist.c b/lib/circogen/edgelist.c
index be0d1e57f942fcaaf9c4b04fff7a023a97d4cb2e..ffd855ed1348c9e7bbfc90585a343d06e3c3277f 100644 (file)
--- a/lib/circogen/edgelist.c
+++ b/lib/circogen/edgelist.c
@@ -14,6 +14,9 @@
 
 static edgelistitem *mkItem(Dt_t * d, edgelistitem * obj, Dtdisc_t * disc)
 {
+    (void)d;
+    (void)disc;
+
     edgelistitem *ap = GNEW(edgelistitem);
 
     ap->edge = obj->edge;
@@ -22,12 +25,18 @@ static edgelistitem *mkItem(Dt_t * d, edgelistitem * obj, Dtdisc_t * disc)
 
 static void freeItem(Dt_t * d, edgelistitem * obj, Dtdisc_t * disc)
 {
+    (void)d;
+    (void)disc;
+
     free(obj);
 }
 
 static int
 cmpItem(Dt_t * d, Agedge_t ** key1, Agedge_t ** key2, Dtdisc_t * disc)
 {
+    (void)d;
+    (void)disc;
+
     if (*key1 > *key2)
        return 1;
     else if (*key1 < *key2)