style: apply ruff-format fixes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tobixen

caldav/collection.py

@@ -751,7 +751,7 @@ def _supported_components_from_response(self, response: Any, with_fallback: bool
         Both the sync and async paths produce a DAVResponse via propfind,
         which always populates response.results via the protocol layer.
         """
-        for result in (response.results or []):
+        for result in response.results or []:
             components = result.properties.get(cdav.SupportedCalendarComponentSet().tag)
             if components:
                 return components

tests/test_caldav_unit.py

@@ -611,7 +611,12 @@ def test_get_supported_components_absent_hints(self):
   </D:response>
 </D:multistatus>"""
         client = MockedDAVClient(xml)
-        client.features = FeatureSet({"save-load.todo": {"support": "unsupported"}, "save-load.journal": {"support": "unsupported"}})
+        client.features = FeatureSet(
+            {
+                "save-load.todo": {"support": "unsupported"},
+                "save-load.journal": {"support": "unsupported"},
+            }
+        )
         components = client.calendar(
             url="https://somwhere.in.the.universe.example/some/caldav/root/testcal/"
         ).get_supported_components()
@@ -844,7 +849,6 @@ def test_get_calendars(self):
         calendar_home_set = CalendarSet(client, url="/dav/tobias%40redpill-linpro.com/")
         assert len(calendar_home_set.get_calendars()) == 1
 
-
     def test_xml_parsing(self):
         """
         DAVResponse has quite some code to parse the XML received from the