test: gofmt run.go

Clean up after CL 5310.

Change-Id: Ib870e7b9d26eb118eefdaa3e76dcec4a4d459584
Reviewed-on: https://go-review.googlesource.com/9398Reviewed-by: Ian Lance Taylor <iant@golang.org>

test/run.go

@@ -829,22 +829,22 @@ func (t *test) updateErrors(out string, file string) {
 	tmpRe := regexp.MustCompile(`autotmp_[0-9]+`)
 	for _, errStr := range splitOutput(out) {
 		colon1 := strings.Index(errStr, ":")
-		if colon1 < 0 || errStr[:colon1] != file{
+		if colon1 < 0 || errStr[:colon1] != file {
 			continue
 		}
 		colon2 := strings.Index(errStr[colon1+1:], ":")
 		if colon2 < 0 {
 			continue
 		}
-		colon2 += colon1+1
-		line, err := strconv.Atoi(errStr[colon1+1:colon2])
+		colon2 += colon1 + 1
+		line, err := strconv.Atoi(errStr[colon1+1 : colon2])
 		line--
 		if err != nil || line < 0 || line >= len(lines) {
 			continue
 		}
 		msg := errStr[colon2+2:]
 		for _, r := range []string{`\`, `*`, `+`, `[`, `]`, `(`, `)`} {
-			msg = strings.Replace(msg, r, `\` + r, -1)
+			msg = strings.Replace(msg, r, `\`+r, -1)
 		}
 		msg = strings.Replace(msg, `"`, `.`, -1)
 		msg = tmpRe.ReplaceAllLiteralString(msg, `autotmp_[0-9]+`)