Channel viewer fails if the query can't subscribe to a channel

[AyrA]

Description

My server has a few channels where guests can neither join nor see users inside of them because they lack permissions to join the channel and to subscribe to it. This seems to really throw off the Text and HTML generator.

How to trigger

1. Create a channel where a user lacks permissions to subscribe
2. Create server query parameters from said users
3. Connect to the server using the given query parameters
4. Trigger with $viewer=new TeamSpeak3_Viewer_Text();echo $server->getViewer($viewer);

$server is a connected TS3 library instance.

Expected outcome

Channels without subscription power are skipped in a similar way that the regular TS3 client does.

Actual outcome

PHP Crash

Key	Value
Type	TeamSpeak3_Adapter_ServerQuery_Exception
Message	insufficient client permissions (failed on i_channel_subscribe_power)
Code	0x00000A08
Location	Reply.php (Line: 316)

Trace:

Reply.php(88) fetchError(object)
ServerQuery.php(140) __construct(array,string,object,boolean)
Abstract.php(70) request(string,boolean)
Server.php(87) request(string,boolean)
Server.php(647) request(string)
Channel.php(118) clientList()
Channel.php(514) clientList()
Abstract.php(462) fetchNodeList()
Abstract.php(479) verifyNodeList()
Abstract.php(511) count()
Abstract.php(195) hasChildren()
channel-api.php(20) getViewer(object)

[ronindesign]

This seems to be a bug with how permission/subscription is handled. Leaving open for now, but no fix is currently under development.