Code review comment for lp:~fboucault/unity-2d/windowimageprovider_remove_timestamp_hack

This is breaking the spread for me. Launch spread (works ok), exit it, then launch it again. It fails to work, errors like:

unity-2d-spread: [WARNING] file:///home/gerry/dev/windowimageprovider_remove_timestamp_hack//spread/Window.qml:64:5: QML Image: Failed to get image from provider: image://window/17184478|23068809