add a return vaule to add_p_edges

Related to #1801.

diff --git a/lib/ortho/ortho.c b/lib/ortho/ortho.c
index 0b847acc0163acd164fc991d08abbf42e8e3efe3..716b2a72486cc1c4db9d0f6ada89f1468e8d2bc3 100644 (file)
--- a/lib/ortho/ortho.c
+++ b/lib/ortho/ortho.c
@@ -1063,7 +1063,7 @@ addPEdges (channel* cp, maze* mp)
     }
 }
 
-static void 
+static int
 add_p_edges (Dt_t* chans, maze* mp)
 {
     Dt_t* lp;
@@ -1076,6 +1076,8 @@ add_p_edges (Dt_t* chans, maze* mp)
            addPEdges ((channel*)l2, mp);
        }
     }
+
+    return 0;
 }
 
 static int