Quitting Thunar during a search changes the last-view setting to ThunarDetailsView

This is only visible with !247 (merged) applied. That MR fixes a segfault when you try quitting during a search.

My normal view mode is Icons View (last-view=ThunarIconView). If I perform a search on a patched main branch, 21d40b89 + !247 (merged), and then quit using either the close button or Ctrl+Q, Thunar exits without crashing. However, the view is reset to last-view=ThunarDetailsView, a.k.a. List View. The settings value change is visible in xfce4-settings-editor.

To be fair to @alexxcons, the last-view setting was being changed to the wrong view before !247 (merged). It just didn't register with me due to the segfault!