fix uninitialize_sta

bleak/backends/winrt/util.py

@@ -186,7 +186,12 @@ def uninitialize_sta():
 
     .. versionadded:: 0.22
     """
+
     try:
-        assert_mta()
-    except BleakError:
+        _get_apartment_type()
+    except OSError as e:
+        # All is OK if not initialized yet. WinRT will initialize it.
+        if e.winerror == _CO_E_NOTINITIALIZED:
+            return
+    else:
         ctypes.windll.ole32.CoUninitialize()

tests/bleak/backends/winrt/test_utils.py

@@ -11,7 +11,7 @@
 
 from ctypes import windll, wintypes
 
-from bleak.backends.winrt.util import _check_hresult, assert_mta
+from bleak.backends.winrt.util import _check_hresult, assert_mta, uninitialize_sta
 from bleak.exc import BleakError
 
 # https://learn.microsoft.com/en-us/windows/win32/api/objbase/ne-objbase-coinit
@@ -64,3 +64,13 @@ async def test_assert_mta_init_sta():
             await assert_mta()
     finally:
         _CoUninitialize()
+
+
+@pytest.mark.asyncio
+async def test_uninitialize_sta():
+    """Test device_path_from_characteristic_path."""
+
+    _CoInitializeEx(None, COINIT_APARTMENTTHREADED)
+    uninitialize_sta()
+
+    await assert_mta()