In KqueueIOManager, close the force-wakeup fd

This small bug was introduced in python-triogh-1551 Fixes python-triogh-1621
njsmith · Jun 16, 2020 · 1d9d0ca · 1d9d0ca
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diff --git a/newsfragments/1621.fix.rst b/newsfragments/1621.fix.rst
@@ -0,0 +1,2 @@
+On macOS and BSDs, explicitly close our wakeup socketpair when we're
+done with it.
diff --git a/trio/_core/_io_kqueue.py b/trio/_core/_io_kqueue.py
@@ -44,6 +44,7 @@ def statistics(self):
 
     def close(self):
         self._kqueue.close()
+        self._force_wakeup.close()
 
     def force_wakeup(self):
         self._force_wakeup.wakeup_thread_and_signal_safe()