all: remove redundant type conversion

Change-Id: Ie059c983bcb3cd6bce7b2097720cbee899abf771
GitHub-Last-Rev: ce45699
GitHub-Pull-Request: #33
Reviewed-on: https://go-review.googlesource.com/c/text/+/429059
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>

Author: cuishuang

encoding/internal/enctest/enctest.go

@@ -66,7 +66,7 @@ func TestEncoding(t *testing.T, e encoding.Encoding, encoded, utf8, prefix, suff
 					// regardless of whatever wPrefix is.
 					continue
 				}
-				got1, want1 := string(g), wPrefix+strings.Repeat(want, n)+wSuffix
+				got1, want1 := g, wPrefix+strings.Repeat(want, n)+wSuffix
 				if got1 != want1 {
 					t.Fatalf("ReadAll: n=%d\ngot  %q\nwant %q",
 						n, trim(got1), trim(want1))

internal/ucd/ucd.go

@@ -317,28 +317,28 @@ func (p *Parser) Bool(i int) bool {
 
 // Int parses and returns field i as an integer value.
 func (p *Parser) Int(i int) int {
-	x, err := strconv.ParseInt(string(p.getField(i)), 10, 64)
+	x, err := strconv.ParseInt(p.getField(i), 10, 64)
 	p.setError(err, "error parsing int")
 	return int(x)
 }
 
 // Uint parses and returns field i as an unsigned integer value.
 func (p *Parser) Uint(i int) uint {
-	x, err := strconv.ParseUint(string(p.getField(i)), 10, 64)
+	x, err := strconv.ParseUint(p.getField(i), 10, 64)
 	p.setError(err, "error parsing uint")
 	return uint(x)
 }
 
 // Float parses and returns field i as a decimal value.
 func (p *Parser) Float(i int) float64 {
-	x, err := strconv.ParseFloat(string(p.getField(i)), 64)
+	x, err := strconv.ParseFloat(p.getField(i), 64)
 	p.setError(err, "error parsing float")
 	return x
 }
 
 // String parses and returns field i as a string value.
 func (p *Parser) String(i int) string {
-	return string(p.getField(i))
+	return p.getField(i)
 }
 
 // Strings parses and returns field i as a space-separated list of strings.