The number of pictures obtained by the getPicture function is incorrect

[yicixin]

Description
I have an xlsx file, there is already a picture in cell A1 of Sheet1, execute the following code, add another picture in cell A1, and then get the picture on cell A1, the number is wrong.

Steps to reproduce the issue:

1. Use excel to create a new xlsx file and add a picture to cell A1 of Sheet1
2. Use excelize to open the xlsx file and add another picture in cell A1 of Sheet1
3. Use Excelize to get pictures on cell A1 in sheet1, and output the number

func TestGetPictures(t *testing.T) {
	f, err := excelize.OpenFile("normal.xlsx")
	if err != nil {
		return
	}
	defer f.Close()
	err = f.AddPicture("Sheet1", "A1", "1.jpg", nil)
	if err != nil {
		return
	}
	pics, err := f.GetPictures("Sheet1", "A1")
	if err != nil {
		return
	}
	fmt.Println(len(pics))
}

Describe the results you received:
The number of pictures I got is 1
Describe the results you expected:
The number I expected is 2

Environment details (OS, Microsoft Excel™ version, physical, etc.):
excelize version: master branch
go version: go1.20
os: windows64
arch: amd64

[yicixin]

I've pinpointed the problem, if we used AddPicture to add the image, then the drawingParser() in getPicture can get the WsDr data without deserialization, but in this case, the image that was originally in xlsx has no coordinate data in the WsDr. So in the getPicturesFromWsDr() , only the image we added with AddPicture can be retrieved.

There is a direct return if getPicturesFromWsDr() gets the number of pictures is not 0, therefore, the following deserialization logic to get the image cannot be executed.

[xuri]

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