Don't throw the exception if a certain Snapcast host is not reachable

platypush/plugins/music/snapcast.py

@@ -569,6 +569,7 @@ class MusicSnapcastPlugin(Plugin):
         playing_hosts = {}
 
         def _worker(host, port):
+            try:
                 if exclude_local and (host == 'localhost'
                                     or  host == Config.get('device_id')):
                     return
@@ -593,6 +594,10 @@ class MusicSnapcastPlugin(Plugin):
                     return
 
                 playing_hosts[host] = port
+            except Exception as e:
+                self.logger.warning(('Error while retrieving the status of ' +
+                                     'Snapcast host at {}:{}: {}').format(
+                                         host, port, str(e)))
 
         workers = []