Fix compiler warning in the xml module (GH-26245) (GH-26249)
The newest version of gcc complains about passing un-initialized arrays
as constant pointers:
```
/Modules/expat/xmltok_ns.c: In function ‘findEncodingNS’:
/Modules/expat/xmltok.h:272:10: warning: ‘buf’ may be used uninitialized [-Wmaybe-uninitialized]
272 | (((enc)->utf8Convert)(enc, fromP, fromLim, toP, toLim))
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Modules/expat/xmltok_ns.c:95:3: note: in expansion of macro ‘XmlUtf8Convert’
95 | XmlUtf8Convert(enc, &ptr, end, &p, p + ENCODING_MAX - 1);
| ^~~~~~~~~~~~~~
/Modules/expat/xmltok.h:272:10: note: by argument 5 of type ‘const char *’ to ‘enum XML_Convert_Result(const ENCODING *, const char **, const char *, char **, const char *)’ {aka ‘enum XML_Convert_Result(const struct encoding *, const char **, const char *, char **, const char *)’}
272 | (((enc)->utf8Convert)(enc, fromP, fromLim, toP, toLim))
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Modules/expat/xmltok_ns.c:95:3: note: in expansion of macro ‘XmlUtf8Convert’
95 | XmlUtf8Convert(enc, &ptr, end, &p, p + ENCODING_MAX - 1);
| ^~~~~~~~~~~~~~
In file included from /Modules/expat/xmltok.c:1657:
/Modules/expat/xmltok_ns.c:92:8: note: ‘buf’ declared here
92 | char buf[ENCODING_MAX];
```
(cherry picked from commit be93f81e58ba3742589259ef84325a95b547e424)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>1 file changed