Corrupted Excel file with conditional formatting inside pivot table

[postulha]

Description

Corrupted Excel file is created after opening a file with conditional formatting inside pivot table, calling UpdateLinkedValue(), and saving it.

Steps to reproduce the issue:
Run the following code (copy input.xlsx to the same dir):

package main

import (
	"log"

	"github.com/360EntSecGroup-Skylar/excelize/v2"
)

func main() {
	f, err := excelize.OpenFile("./input.xlsx")
	if err != nil {
		log.Fatalf("open Excel file: %v", err)
	}

	if err := f.UpdateLinkedValue(); err != nil {
		log.Fatalf("update Excel linked values: %v", err)
	}

	if err = f.SaveAs("./output.xlsx"); err != nil {
		log.Fatalf("save Excel file: %v", err)
	}
}

Describe the results you received:
After opening the result file output.xlsx I see the message WORKBOOK REPAIRED We temporarily repaired this workbook so that you can open it in Reading View..

Describe the results you expected:
The result file is successfully opened without any warnings or errors.

Output of go version:

go version go1.16.3 linux/amd64

Excelize version or commit ID:

2.4.0

Environment details (OS, Microsoft Excel™ version, physical, etc.):
go env output:

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/alex/.cache/go-build"
GOENV="/home/alex/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/alex/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/alex/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.16.3"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1758173493=/tmp/go-build -gno-record-gcc-switches"

Microsoft Excel version: Office 365 online on https://www.office.com

[xuri]

Thanks for your feedback, I have fixed it, please try to use the master branch code, and this patch will be released in the next version.