encoding/base32, encoding/base64: removed unneeded break label

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6305086

src/pkg/encoding/base32/base32.go

@@ -237,7 +237,6 @@ func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {
 		dlen := 8
 
 		// do the top bytes contain any data?
-	dbufloop:
 		for j := 0; j < 8; {
 			if len(src) == 0 {
 				return n, false, CorruptInputError(len(osrc) - len(src) - j)
@@ -258,7 +257,7 @@ func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {
 				}
 				dlen = j
 				end = true
-				break dbufloop
+				break
 			}
 			dbuf[j] = enc.decodeMap[in]
 			if dbuf[j] == 0xFF {

src/pkg/encoding/base64/base64.go

@@ -216,7 +216,6 @@ func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {
 		var dbuf [4]byte
 		dlen := 4
 
-	dbufloop:
 		for j := 0; j < 4; {
 			if len(src) == 0 {
 				return n, false, CorruptInputError(len(osrc) - len(src) - j)
@@ -240,7 +239,7 @@ func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {
 				}
 				dlen = j
 				end = true
-				break dbufloop
+				break
 			}
 			dbuf[j] = enc.decodeMap[in]
 			if dbuf[j] == 0xFF {