Merge pull request #708 from simonbuehler/master

[2.x] Fix unsubscribeFromAllChannels leaving stale connections

src/ChannelManagers/LocalChannelManager.php

@@ -173,7 +173,10 @@ class LocalChannelManager implements ChannelManager
 
         $this->getLocalChannels($connection->app->id)
             ->then(function ($channels) use ($connection) {
-                collect($channels)->each->unsubscribe($connection);
+                collect($channels)
+                    ->each(function (Channel $channel) use ($connection) {
+                        $channel->unsubscribe($connection);
+                    });
 
                 collect($channels)
                     ->reject->hasConnections()