[AltServer] Fixes disconnecting ALTWiredConnection’s

ALTWiredConnection.disconnect() doesn’t do anything if ALTWiredConnection.isConnected == NO. The problem is, we never set .isConnected to YES in the first place…which means disconnect() never actually did anything. Whoops.

AltServer/Connections/ALTWiredConnection.mm

@@ -20,6 +20,8 @@
     {
         _device = [device copy];
         _connection = connection;
+        
+        self.connected = YES;
     }
     
     return self;