Issue #16485: Fix file descriptor not being closed if file header patching fails...

diff --cc Lib/aifc.py
Simple merge

diff --cc Lib/test/test_aifc.py
Simple merge

diff --cc Misc/NEWS
index 7a654b9da84b6b2dac8c88b2c8483be7bbc6c5d0,8ce30c529ae3608ae3a789805d3d5248b48eecdb..2a22bb56e02468c9e123880569516a4bae119212
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -124,12 -189,9 +124,15 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #16485: Fix file descriptor not being closed if file header patching
+   fails on closing of aifc file.
+ 
 +- Issue #16165: Fix sched.scheduler.run() method was block a scheduler for
 +  other threads.
 +
 +- Issue #16641: Fix default values of sched.scheduler.enter arguments were
 +  modifiable.
 +
  - Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by
    Roger Serwy.