Chore (#1365)

* chore-1

* chore2

bytesconv.go

@@ -252,9 +252,7 @@ var (
 )
 
 func readHexInt(r *bufio.Reader) (int, error) {
-	n := 0
-	i := 0
-	var k int
+	var k, i, n int
 	for {
 		c, err := r.ReadByte()
 		if err != nil {

peripconn.go

@@ -48,8 +48,10 @@ type perIPConn struct {
 func acquirePerIPConn(conn net.Conn, ip uint32, counter *perIPConnCounter) *perIPConn {
 	v := counter.pool.Get()
 	if v == nil {
-		v = &perIPConn{
+		return &perIPConn{
 			perIPConnCounter: counter,
+			Conn:             conn,
+			ip:               ip,
 		}
 	}
 	c := v.(*perIPConn)

uri.go

@@ -538,15 +538,9 @@ func shouldEscape(c byte, mode encoding) bool {
 }
 
 func ishex(c byte) bool {
-	switch {
-	case '0' <= c && c <= '9':
-		return true
-	case 'a' <= c && c <= 'f':
-		return true
-	case 'A' <= c && c <= 'F':
-		return true
-	}
-	return false
+	return ('0' <= c && c <= '9') ||
+		('a' <= c && c <= 'f') ||
+		('A' <= c && c <= 'F')
 }
 
 func unhex(c byte) byte {