html/template, encoding/asn1: fix test errors

Change-Id: I1da1d718609eb6a7b78d29b173ec780bde22c687
Reviewed-on: https://go-review.googlesource.com/16422Reviewed-by: Ralph Corderoy <ralph@inputplus.co.uk>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>

src/encoding/asn1/asn1_test.go

@@ -948,7 +948,7 @@ func TestMarshalNilValue(t *testing.T) {
 	}
 	for i, test := range nilValueTestData {
 		if _, err := Marshal(test); err == nil {
-			t.Fatal("#%d: successfully marshaled nil value", i)
+			t.Fatalf("#%d: successfully marshaled nil value", i)
 		}
 	}
 }

src/html/template/clone_test.go

@@ -81,7 +81,7 @@ func TestClone(t *testing.T) {
 	// Clone t0 as t4. Redefining the "lhs" template should not fail.
 	t4 := Must(t0.Clone())
 	if _, err := t4.Parse(`{{define "lhs"}} OK {{end}}`); err != nil {
-		t.Error(`redefine "lhs": got err %v want non-nil`, err)
+		t.Errorf(`redefine "lhs": got err %v want nil`, err)
 	}
 	// Cloning t1 should fail as it has been executed.
 	if _, err := t1.Clone(); err == nil {