Bugfix don't double-access log if the response was sent

The access log after StreamClosed is meant for requests that are not
responded to - usually due to an error that would otherwise go
unnoticed without this log.

Author: pgjones

src/hypercorn/protocol/http_stream.py

@@ -110,7 +110,8 @@ async def handle(self, event: Event) -> None:
             await self.app_put({"type": "http.request", "body": b"", "more_body": False})
         elif isinstance(event, StreamClosed):
             self.closed = True
-            await self.config.log.access(self.scope, None, time() - self.start_time)
+            if self.state != ASGIHTTPState.CLOSED:
+                await self.config.log.access(self.scope, None, time() - self.start_time)
             if self.app_put is not None:
                 await self.app_put({"type": "http.disconnect"})