Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog ended...

Patch by Roger Serwy.

diff --cc Misc/NEWS
index e27d73f43a3fc5dd92b7954c8bb001c8c9fe5f1b,c431474a0fe7e9bf0adbc150ff9699a4bd5a61a4..ee8821530f680c97c9e7423920804430ed1582ed
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -77,10 -101,9 +77,13 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog
+   ended with '\'. Patch by Roger Serwy.
+ 
 +- Issue #12655: Instead of requiring a custom type, os.sched_getaffinity and
 +  os.sched_setaffinity now use regular sets of integers to represent the CPUs
 +  a process is restricted to.
 +
  - Issue #15538: Fix compilation of the getnameinfo() / getaddrinfo()
    emulation code.  Patch by Philipp Hagemeister.