This should fix an actual race condition:
- Client unmaps its window (UnmapNotify for awesome)
- Client maps its window (MapRequest for awesome)
- Due to the UnmapNotify: client_unmanage() runs and reparents the window back
to the root (ReparentNotify)
- Due to the MapRequest: client_manage() runs
- Due to the ReparentNotify: We call client_unmanage() again and now the
client's window is lost.
Signed-off-by: Uli Schlachter <psychon@znc.in>
0eb9363533