Index: Slim/Player/Client.pm
===================================================================
--- Slim/Player/Client.pm	(revision 30374)
+++ Slim/Player/Client.pm	(working copy)
@@ -575,6 +575,9 @@
 		
 		# stop watching this player
 		delete $Slim::Networking::Slimproto::heartbeat{ $client->id };
+		
+		# Bug 15860: Force the connection shut if it is not already
+		Slim::Networking::Slimproto::slimproto_close($client->tcpsock()) if defined $client->tcpsock();
 	}
 }