Adjust the check for a module lock being released as suggest by review

Co-authored-by: Brett Cannon <brett@python.org>
python · brettcannon · Jan 21, 2023 · Jun 27, 2022 · Jun 27, 2022 · Jun 30, 2022
commit cd174a82dbb68ff27d1d6f6e8bb5a54958e20b03
@@ -288,7 +288,7 @@ def release(self):
                 raise RuntimeError('cannot release un-acquired lock')
             assert len(self.count) > 0
             self.count.pop()
-            if len(self.count) == 0:
+            if not len(self.count):
                 self.owner = None
                 if len(self.waiters) > 0:
                     self.waiters.pop()