Code review comment for lp:~junrrein/pantheon-files/fix-1069275

This commit brought a regression:

- Open the Properties window when a/some file/s are selected (not folders).
- Close it and select another file/folder

The selected files dissappear from the view. In icon view, clicking on the blank space where any of the files should be causes Files to crash. In list/column view, Files doesn't crash, but in column view it introduces weird behavior (the missing file/s are replaced with some random folders).