For fpcalc use normpath instead of win_prefix_longpath

This is platform independent and also handles the case where the system
has native support for long paths.

picard/acoustid/__init__.py

@@ -6,7 +6,7 @@
 # Copyright (C) 2017-2018 Sambhav Kothari
 # Copyright (C) 2018 Vishal Choudhary
 # Copyright (C) 2018-2021 Laurent Monin
-# Copyright (C) 2018-2022 Philipp Wolfer
+# Copyright (C) 2018-2023 Philipp Wolfer
 # Copyright (C) 2023 Bob Swift
 #
 # This program is free software; you can redistribute it and/or
@@ -40,11 +40,10 @@
     DEFAULT_FPCALC_THREADS,
     FPCALC_NAMES,
 )
-from picard.const.sys import IS_WIN
 from picard.file import File
 from picard.util import (
     find_executable,
-    win_prefix_longpath,
+    normpath,
 )
 
 
@@ -259,9 +258,7 @@ def _run_next_task(self):
         process.setProperty('picard_finished', False)
         process.finished.connect(partial(self._on_fpcalc_finished, task))
         process.error.connect(partial(self._on_fpcalc_error, task))
-        file_path = task.file.filename
-        if IS_WIN:
-            file_path = win_prefix_longpath(file_path)
+        file_path = normpath(task.file.filename)
         process.start(self._fpcalc, ["-json", "-length", "120", file_path])
         log.debug("Starting fingerprint calculator %r %r", self._fpcalc, task.file.filename)