locale_database: Use super() to call base class methods

This is the standard way to call base class methods in Python 3 and
it is shorter than the custom one used now.

Task-number: QTBUG-83488
Pick-to: 6.2
Change-Id: Ifaff591a46e92148fbf514856109ff794a50c9f7
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

util/locale_database/localetools.py

@@ -41,9 +41,8 @@ import os
 import tempfile
 
 class Error (Exception):
-    __upinit = Exception.__init__
     def __init__(self, msg, *args):
-        self.__upinit(msg, *args)
+        super().__init__(msg, *args)
         self.message = msg
     def __str__(self):
         return self.message
@@ -126,7 +125,6 @@ class SourceFileEditor (Transcriber):
     Callers should call close() on success or cleanup() on failure (to
     clear away the temporary file); see Transcriber.
     """
-    __upinit = Transcriber.__init__
     def __init__(self, path, temp):
         """Set up the source file editor.
 
@@ -134,13 +132,12 @@ class SourceFileEditor (Transcriber):
         and, on success, replaced with a new version; and the
         directory in which to store the temporary file during the
         rewrite."""
-        self.__upinit(path, temp)
+        super().__init__(path, temp)
         self.__copyPrelude()
 
-    __upclose = Transcriber.close
     def close(self):
         self.__copyTail()
-        self.__upclose()
+        super().close()
 
     # Implementation details:
     GENERATED_BLOCK_START = '// GENERATED PART STARTS HERE'

util/locale_database/qlocalexml2cpp.py

@@ -133,9 +133,8 @@ def currencyIsoCodeData(s):
     return "{0,0,0}"
 
 class LocaleSourceEditor (SourceFileEditor):
-    __upinit = SourceFileEditor.__init__
     def __init__(self, path, temp, version):
-        self.__upinit(path, temp)
+        super().__init__(path, temp)
         self.writer.write("""
 /*
     This part of the file was generated on {} from the
@@ -447,9 +446,8 @@ class CalendarDataWriter (LocaleSourceEditor):
         months_data.write(self.writer)
 
 class LocaleHeaderWriter (SourceFileEditor):
-    __upinit = SourceFileEditor.__init__
     def __init__(self, path, temp, dupes):
-        self.__upinit(path, temp)
+        super().__init__(path, temp)
         self.__dupes = dupes
 
     def languages(self, languages):