Index: pcb-mincut/solve.c
===================================================================
--- pcb-mincut/solve.c	(revision 18163)
+++ pcb-mincut/solve.c	(revision 18164)
@@ -119,8 +119,10 @@
 		int n1, n2;
 		n2 = pick_del(&st);
 		n1 = pick_neigh(&st, n2);
-		if (n1 < 0)
+		if (n1 < 0) {
+			FREE_ALL();
 			return BAD;
+		}
 #ifndef DEBUG_MERGES
 #ifdef DEBUG_SOLVE
 			printf("Merge %d (%s) into %d (%s)\n", n2, st.g->node2name[n2], n1, st.g->node2name[n1]);