Fix aiohttp test RuntimeWarning (#98568)

homeassistant/components/buienradar/util.py

@@ -109,7 +109,7 @@ class BrData:
             return result
         finally:
             if resp is not None:
-                await resp.release()
+                resp.release()
 
     async def _async_update(self):
         """Update the data from buienradar."""

tests/test_util/aiohttp.py

@@ -255,7 +255,7 @@ class AiohttpClientMockResponse:
         """Return mock response as a json."""
         return loads(self.response.decode(encoding))
 
-    async def release(self):
+    def release(self):
         """Mock release."""
 
     def raise_for_status(self):