ctypes: fix arg name on windows (#4111)

Co-authored-by: hauntsaninja <>

stdlib/2and3/ctypes/__init__.pyi

@@ -183,7 +183,7 @@ def sizeof(obj_or_type: _UnionT[_CData, Type[_CData]]) -> int: ...
 def string_at(address: _CVoidConstPLike, size: int = ...) -> bytes: ...
 if sys.platform == 'win32':
     def WinError(code: Optional[int] = ...,
-                 desc: Optional[str] = ...) -> WindowsError: ...
+                 descr: Optional[str] = ...) -> OSError: ...
 def wstring_at(address: _CVoidConstPLike, size: int = ...) -> str: ...
 
 class _SimpleCData(Generic[_T], _CData):

tests/stubtest_whitelists/win32.txt

@@ -1,5 +1,4 @@
 ctypes.GetLastError  # Is actually a pointer
-ctypes.WinError  # Parameter name mismatch
 locale.[A-Z0-9_]+  # Constants that should be moved to _locale and re-exported conditionally
 locale.nl_langinfo  # Function that should be moved to _locale and re-exported conditionally
 os.path.join  # Parameter name mismatch