shell-window-tracker: Detect invalid PID values of 0

MetaWindows get_pid() API changed to use the client PID, which also
works for Wayland clients instead of only X11 clients now. This API
returns 0 instead of -1 for invalid PIDs, so update our check according
to that.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1184

diff --git a/src/shell-window-tracker.c b/src/shell-window-tracker.c
index 075cb2a1649a021f669057b5298f8db13c28b04d..99ed8270c0efad35c54e731a6fc362d7b8201a4b 100644 (file)
--- a/src/shell-window-tracker.c
+++ b/src/shell-window-tracker.c
@@ -343,7 +343,7 @@ get_app_from_window_pid (ShellWindowTracker  *tracker,
 
   pid = meta_window_get_pid (window);
 
-  if (pid == -1)
+  if (pid < 1)
     return NULL;
 
   result = shell_window_tracker_get_app_from_pid (tracker, pid);