bitbake: bb/server/process.py: ProcessEventQueue add close of _writer pipe

Call explicity close in _writer to avoid fd leakage because isn't
called on Queue.close()

[YOCTO #10873]

(Bitbake rev: 12dfac442d2d5674198485fbeb708a01d215c576)

Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/server/process.py

@@ -233,6 +233,9 @@ class BitBakeProcessServerConnection(BitBakeBaseServerConnection):
         self.ui_channel.close()
         self.event_queue.close()
         self.event_queue.setexit()
+        # XXX: Call explicity close in _writer to avoid
+        # fd leakage because isn't called on Queue.close()
+        self.event_queue._writer.close()
 
 # Wrap Queue to provide API which isn't server implementation specific
 class ProcessEventQueue(multiprocessing.queues.Queue):
@@ -264,7 +267,6 @@ class ProcessEventQueue(multiprocessing.queues.Queue):
                 sys.exit(1)
             return None
 
-
 class BitBakeServer(BitBakeBaseServer):
     def initServer(self, single_use=True):
         # establish communication channels.  We use bidirectional pipes for