--- a/src/libscotchmetis/metis_graph_part.c	2018-07-13 14:25:50.000000000 -0500
+++ b/src/libscotchmetis/metis_graph_part.c	2018-07-13 14:21:08.000000000 -0500
@@ -298,7 +298,7 @@

     edgenbr = xadj[vertnbr] - baseval;
     if ((edlotax = memAlloc (edgenbr * sizeof (SCOTCH_Num))) == NULL)
-      return;
+      return (METIS_ERROR);
     edlotax -= baseval;                           /* Base access to edlotax */
     vsiztax  = vsize2 - baseval;