[Tracker] sometimes fails to update icons

[diver]

This is hrev44700 gcc2 hybrid.

Tracker often fails to update icons when dragging file selection with several items.

To reproduce:

• cp -r /system/servers ~/Desktop
• cd ~/Desktop/servers
• open .
• strip -s *

Oddly enough sometimes a few files remain their Be application icon.

Now select all of them with Alt+a and drag the file selection. Again not all files changes from Generic file to Be application.

Note that if you right click them (instead of dragging) Tracker always identifies all files.