Fix indefinite hang on SIGINT if the QUIT fails by forcefully killing the connection after 10 seconds

irclog.py

@@ -553,7 +553,10 @@ class IRCClientProtocol(asyncio.Protocol):
 		# The server acknowledges a QUIT by sending an ERROR and closing the connection. The latter triggers connection_lost, so just wait for the closure event.
 		self.logger.info('Quitting')
 		self.send(b'QUIT :Bye')
-		await self.connectionClosedEvent.wait()
+		await asyncio.wait((asyncio.sleep(10), self.connectionClosedEvent.wait()), return_when = asyncio.FIRST_COMPLETED)
+		if not self.connectionClosedEvent.is_set():
+			self.logger.error('Quitting cleanly did not work, closing connection forcefully')
+			# Event will be set implicitly in connection_lost.
 		self.transport.close()
 
 	def connection_lost(self, exc):