update comment

Author: YvesDup

Lib/multiprocessing/synchronize.py

@@ -133,9 +133,9 @@ def _make_name():
     class _MacOSXSemaphore(SemLock):
         """Dedicated class used only to workaround the missing
         function 'sem_getvalue', when interpreter runs on MacOSX.
-        Add a shared counter for each [Bounded]Semaphore in order
-        to handle internal counter when acquire and release operations
-        are called.
+        Add two shared counters for each [Bounded]Semaphore in order
+        to handle 'internal counter' and 'pending acquires' counters
+        when acquire and release operations are called.
         """
 
         def __init__(self, kind, value, maxvalue, *, ctx):
@@ -175,7 +175,7 @@ def get_value(self):
 
         def _make_methods(self):
             # Do not call the `Semlock._make_methods` method,
-            # as this breaks the reference to the local
+            # because that breaks the reference to the local
             # `acquire` and `release` methods.
             pass