Fixed Nullpointer

MainActivity.java:890 (1596c87c8f3fdfb641204356cb6bc7cb)
Fixed NullPointer

SpecialListSettings.java:141 (109fd33269632b57083944b20a2e2f92)
Fixed Sync error

TLSClient.java:91 (e465342802e13a88ed957a882642cbe1)
Probably fixed Nullpointer

TaskFragment.java:90 (167935d4138d1e37403c13a1191180aa)
Fixed nullpointer and cleanup

Task.java:335 (2e9b809a801cbf83090aecf061bd1719)