gh-104783: locale.getlocale() calls sys.getfilesystemencoding() (#105401)

locale.getlocale() always calls sys.getfilesystemencoding(), instead
of calling it only once.

Author: vstinner

Lib/locale.py

@@ -618,9 +618,8 @@ def setlocale(category, locale=None):
 except ImportError:
     # When _locale.getencoding() is missing, locale.getencoding() uses the
     # Python filesystem encoding.
-    _encoding = sys.getfilesystemencoding()
     def getencoding():
-        return _encoding
+        return sys.getfilesystemencoding()
 
 
 try: