encoding/json: remove unnecessary else conditions

Fixes golint warning about "if block ends with a return statement, so drop this else and outdent its block".

Change-Id: Id17ad0bf37ba939386b177b709e9e3c067d8ba21
Reviewed-on: https://go-review.googlesource.com/105736
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/encoding/json/decode.go

@@ -896,9 +896,8 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 		if !ok {
 			if fromQuoted {
 				return fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())
-			} else {
-				return errPhase
 			}
+			return errPhase
 		}
 		err := ut.UnmarshalText(s)
 		if err != nil {
@@ -952,9 +951,8 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 		if !ok {
 			if fromQuoted {
 				return fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())
-			} else {
-				return errPhase
 			}
+			return errPhase
 		}
 		switch v.Kind() {
 		default:
@@ -985,9 +983,8 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 		if c != '-' && (c < '0' || c > '9') {
 			if fromQuoted {
 				return fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())
-			} else {
-				return errPhase
 			}
+			return errPhase
 		}
 		s := string(item)
 		switch v.Kind() {
@@ -1001,9 +998,8 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 			}
 			if fromQuoted {
 				return fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())
-			} else {
-				return &UnmarshalTypeError{Value: "number", Type: v.Type(), Offset: int64(d.readIndex())}
 			}
+			return &UnmarshalTypeError{Value: "number", Type: v.Type(), Offset: int64(d.readIndex())}
 		case reflect.Interface:
 			n, err := d.convertNumber(s)
 			if err != nil {