(Merge 3.4) Issue #22338: Fix a crash in the json module on memory allocation

failure.

diff --cc Misc/NEWS
index 4dd8de39b30a7716dae8789317341b00ab4b8e73,91125e708db5896e07bebf980a4c779b62e953b4..49909a103b5a6afd8f0cff25b38b9156e13bc6ac
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -132,15 -32,8 +132,17 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #22338: Fix a crash in the json module on memory allocation failure.
+ 
 +- Issue #12410: imaplib.IMAP4 now supports the context management protocol.
 +  Original patch by Tarek Ziadé.
 +
 +- Issue #16662: load_tests() is now unconditionally run when it is present in
 +  a package's __init__.py.  TestLoader.loadTestsFromModule() still accepts
 +  use_load_tests, but it is deprecated and ignored.  A new keyword-only
 +  attribute `pattern` is added and documented.  Patch given by Robert Collins,
 +  tweaked by Barry Warsaw.
 +
  - Issue #22226: First letter no longer is stripped from the "status" key in
    the result of Treeview.heading().