Crash if reddit request fails

[supermopf]

Describe the bug If the reddit request failes, ASF crashes. In my scenario, this is probably caused by the ip pool of the server or a rate limit.

To Reproduce Steps to reproduce the behavior:

1. Get blocked by reddit (HTTP 403 Blocked/Forbidden)
2. Run the plugin

Expected behavior Error should be handled and dont crash.

Screenshots

[22:53:29] INFO Zulu > Init() Success!
[22:53:29] INFO Zulu > IsAnythingToFarm() Checking first badge page...
[22:53:30] INFO Zulu > StartFarming() We don't have anything to farm on this account!
[22:53:41] DEBUG ASF > InternalRequest() Forbidden <- GET https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:41] WARN ASF > UrlGetToStream() Request failed after 5 attempts!
[22:53:41] DEBUG ASF > UrlGetToStream() Request failing: https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:41] DEBUG ASF > InternalRequest() Forbidden <- GET https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:41] WARN ASF > UrlGetToStream() Request failed after 5 attempts!
[22:53:41] DEBUG ASF > UrlGetToStream() Request failing: https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:41] DEBUG ASF > InternalRequest() Forbidden <- GET https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:41] WARN ASF > UrlGetToStream() Request failed after 5 attempts!
[22:53:41] DEBUG ASF > UrlGetToStream() Request failing: https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:42] DEBUG ASF > InternalRequest() Forbidden <- GET https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:42] WARN ASF > UrlGetToStream() Request failed after 5 attempts!
[22:53:42] DEBUG ASF > UrlGetToStream() Request failing: https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:44] DEBUG ASF > InternalRequest() Forbidden <- GET https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:44] WARN ASF > UrlGetToStream() Request failed after 5 attempts!
[22:53:44] DEBUG ASF > UrlGetToStream() Request failing: https://www.reddit.com/user/ASFinfo.json?sort=new
[22:53:44] FATAL ASF > OnUnhandledException() Maxisoft.ASF.Reddit.RedditServerException: Reddit server error: content is null at Maxisoft.ASF.Reddit.RedditHelper.GetPayload(WebBrowser webBrowser, CancellationToken cancellationToken, UInt32 retry) at Maxisoft.ASF.Reddit.RedditHelper.GetPayload(WebBrowser webBrowser, CancellationToken cancellationToken, UInt32 retry) at Maxisoft.ASF.Reddit.RedditHelper.GetGames(CancellationToken cancellationToken) at ASFFreeGames.Commands.FreeGamesCommand.CollectGames(IEnumerable`1 bots, ECollectGameRequestSource requestSource, CancellationToken cancellationToken) at ASFFreeGames.Commands.FreeGamesCommand.HandleInternalCollectCommand(Bot bot, String[] args, CancellationToken cancellationToken) at ASFFreeGames.Commands.FreeGamesCommand.Execute(Bot bot, String message, String[] args, UInt64 steamID, CancellationToken cancellationToken) at ASFFreeGames.Commands.CommandDispatcher.Execute(Bot bot, String message, String[] args, UInt64 steamID, CancellationToken cancellationToken) at Maxisoft.ASF.ASFFreeGamesPlugin.OnBotCommand(Bot bot, EAccess access, String message, String[] args, UInt64 steamID) at Maxisoft.ASF.ASFFreeGamesPlugin.CollectGamesOnClock(Object source) at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state) at System.Threading.QueueUserWorkItemCallback.<>c.<.cctor>b__6_0(QueueUserWorkItemCallback quwi) at System.Threading.ExecutionContext.RunForThreadPoolUnsafe[TState](ExecutionContext, Action`1, TState& ) at System.Threading.QueueUserWorkItemCallback.Execute() at System.Threading.ThreadPoolWorkQueue.Dispatch() at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() at System.Threading.Thread.StartCallback()
[22:53:44] ERROR ASF > Exit() Exiting with 1 error code!
[22:53:44] INFO Microsoft.Hosting.Lifetime > Application is shutting down...

ASF:

• ASF: v6.0.2.6
• Plugin: v1.5.2