Description:
LibreOffice 25.8.2 does not close (or maybe after a very long time ?) after edition of a webdav file.
Reverting to v25.2.7 makes it work again.

Steps to Reproduce:
1. Open LibreOffice 25.8.2
2. CLick "File > Open..."
3. In filename box, paste the url of a webdav file and click "Open"
(if a test url is needed :
     a. In a web browser, go to "https://webdavserver.net/" and choose a file, for example Stat.xlsx
     b. Copy the browser url (there should be a UserXXXXXXX subflder) and append the filename to build the file URL, like "https://webdavserver.net/UserXXXXXXX/Stat.xlsx"
)
4. After file viewing/editing, click "File > Exit LibreOffice"

Actual Results:
LibreOffice does not close, or we have to wait a very long time (after 15 seconds, I clicked on the cross, then Windows displayed "LibreOffice is not responding" and afterwards, it was killed by Windows).

Expected Results:
LibreOffice closes quickly.


Reproducible: Always


User Profile Reset: No

Additional Info:
It was working with previous LibreOffice versions, until 25.2.7 included.