Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().

Lib/multiprocessing/pool.py

@@ -500,7 +500,7 @@ class Pool(object):
         task_handler.join()
 
         debug('joining result handler')
-        task_handler.join()
+        result_handler.join()
 
         if pool and hasattr(pool[0], 'terminate'):
             debug('joining pool workers')

Misc/NEWS

@@ -53,6 +53,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().
+
 - Issue #8428: Fix a race condition in multiprocessing.Pool when terminating
   worker processes: new processes would be spawned while the pool is being
   shut down.  Patch by Charles-François Natali.