[Python-checkins] Fix readline.c compiler warning. (GH-98738)

[miss-islington]

https://github.com/python/cpython/commit/5074c35c2a5659e74cd7a0e925a0d7e493ea28e1
commit: 5074c35c2a5659e74cd7a0e925a0d7e493ea28e1
branch: 3.10
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2022-10-26T16:28:40-07:00
summary:

Fix readline.c compiler warning. (GH-98738)


```
Modules/readline.c:1260:37: warning: assigning to 'char *' from 'const char *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
    completer_word_break_characters =
                                    ^
```
(cherry picked from commit 29b391b1378577825a658b14764a8ff3e0b5c958)

Co-authored-by: Benjamin Peterson <benjamin at python.org>

files:
M Modules/readline.c

diff --git a/Modules/readline.c b/Modules/readline.c
index c79d22f85f84..1d5067209072 100644
--- a/Modules/readline.c
+++ b/Modules/readline.c
@@ -1256,9 +1256,9 @@ setup_readline(readlinestate *mod_state)
     rl_attempted_completion_function = flex_complete;
     /* Set Python word break characters */
     completer_word_break_characters =
-        rl_completer_word_break_characters =
         strdup(" \t\n`~!@#$%^&*()-=+[{]}\\|;:'\",<>/?");
         /* All nonalphanums except '.' */
+    rl_completer_word_break_characters = completer_word_break_characters;
 
     mod_state->begidx = PyLong_FromLong(0L);
     mod_state->endidx = PyLong_FromLong(0L);