strconv: use Scanner in fp_test

R=rsc
CC=golang-dev
https://golang.org/cl/7385045

src/pkg/strconv/fp_test.go

@@ -7,7 +7,6 @@ package strconv_test
 import (
 	"bufio"
 	"fmt"
-	"io"
 	"os"
 	"strconv"
 	"strings"
@@ -102,19 +101,10 @@ func TestFp(t *testing.T) {
 	}
 	defer f.Close()
 
-	b := bufio.NewReader(f)
+	s := bufio.NewScanner(f)
 
-	lineno := 0
-	for {
-		line, err2 := b.ReadString('\n')
-		if err2 == io.EOF {
-			break
-		}
-		if err2 != nil {
-			t.Fatal("testfp: read testdata/testfp.txt: " + err2.Error())
-		}
-		line = line[0 : len(line)-1]
-		lineno++
+	for lineno := 1; s.Scan(); lineno++ {
+		line := s.Text()
 		if len(line) == 0 || line[0] == '#' {
 			continue
 		}
@@ -148,4 +138,7 @@ func TestFp(t *testing.T) {
 				"want ", a[3], " got ", s)
 		}
 	}
+	if s.Err() != nil {
+		t.Fatal("testfp: read testdata/testfp.txt: ", s.Err())
+	}
 }