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-rw-r--r--src/core/window-props.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/core/window-props.c b/src/core/window-props.c
index b27809ab..06df9e66 100644
--- a/src/core/window-props.c
+++ b/src/core/window-props.c
@@ -305,6 +305,8 @@ get_local_pid (MetaWindow *window)
long i;
pid = -1;
+ if (window->display->have_xres == FALSE)
+ return pid;
spec.client = window->xwindow;
spec.mask = XRES_CLIENT_ID_PID_MASK;