autopilot/prefattach_test: assert scored nodes having addresses

This addtion to the test makes sure the scored nodes have their
addresses populated. This would fail without the previous commit.

autopilot/prefattach_test.go

@@ -436,6 +436,11 @@ func TestConstrainedPrefAttachmentSelectTwoVertexes(t *testing.T) {
 						"to be %v, instead was %v",
 						expScore, candidate.Score)
 				}
+
+				if len(candidate.Addrs) == 0 {
+					t1.Fatalf("expected node to have " +
+						"available addresses, didn't")
+				}
 			}
 		})
 		if !success {
@@ -633,6 +638,11 @@ func TestConstrainedPrefAttachmentSelectGreedyAllocation(t *testing.T) {
 						"of %v, instead got %v",
 						maxChanSize, candidate.ChanAmt)
 				}
+
+				if len(candidate.Addrs) == 0 {
+					t1.Fatalf("expected node to have " +
+						"available addresses, didn't")
+				}
 			}
 
 			// Imagine a few channels are being opened, and there's
@@ -663,6 +673,11 @@ func TestConstrainedPrefAttachmentSelectGreedyAllocation(t *testing.T) {
 						"of %v, instead got %v",
 						remBalance, candidate.ChanAmt)
 				}
+
+				if len(candidate.Addrs) == 0 {
+					t1.Fatalf("expected node to have " +
+						"available addresses, didn't")
+				}
 			}
 		})
 		if !success {
@@ -753,6 +768,11 @@ func TestConstrainedPrefAttachmentSelectSkipNodes(t *testing.T) {
 						"of %v, instead got %v",
 						maxChanSize, candidate.ChanAmt)
 				}
+
+				if len(candidate.Addrs) == 0 {
+					t1.Fatalf("expected node to have " +
+						"available addresses, didn't")
+				}
 			}
 
 			// We'll simulate a channel update by adding the nodes