core/rawdb: fix freezer close sync error message (#35135)

Print the expected freezer close sync error before the actual value in
TestFreezerCloseSync. The assertion already compared have and want
correctly, but the failure message reported them in the wrong order.

core/rawdb/freezer_test.go

@@ -516,7 +516,7 @@ func TestFreezerCloseSync(t *testing.T) {
 	if err := f.SyncAncient(); err == nil {
 		t.Fatalf("want error, have nil")
 	} else if have, want := err.Error(), "[closed closed]"; have != want {
-		t.Fatalf("want %v, have %v", have, want)
+		t.Fatalf("want %v, have %v", want, have)
 	}
 }