Jonas Dreßler d4db5a59c1 shell-app: Ignore invalid window PIDs
When building the list of window PIDs, it's possible Mutter doesn't know
about the PID the client has and meta_window_get_pid() will return 0. We
should handle this case by not adding the PID to the list of PIDs
instead of adding an invalid one to it.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1184
2020-04-06 21:53:37 +00:00
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