p2p/discover: fix test error messages (#29592)

p2p/discover/v4_udp_test.go

@@ -282,12 +282,12 @@ func TestUDPv4_findnode(t *testing.T) {
 	waitNeighbors := func(want []*node) {
 		test.waitPacketOut(func(p *v4wire.Neighbors, to *net.UDPAddr, hash []byte) {
 			if len(p.Nodes) != len(want) {
-				t.Errorf("wrong number of results: got %d, want %d", len(p.Nodes), bucketSize)
+				t.Errorf("wrong number of results: got %d, want %d", len(p.Nodes), len(want))
 				return
 			}
 			for i, n := range p.Nodes {
 				if n.ID.ID() != want[i].ID() {
-					t.Errorf("result mismatch at %d:\n  got:  %v\n  want: %v", i, n, expected.entries[i])
+					t.Errorf("result mismatch at %d:\n  got: %v\n  want: %v", i, n, expected.entries[i])
 				}
 				if !live[n.ID.ID()] {
 					t.Errorf("result includes dead node %v", n.ID.ID())