Add extra message to avoid a long 'Loading banlist'

Github-Pull: #8392
Rebased-From: aa59f2ed3f

src/net.cpp

@@ -2092,6 +2092,8 @@ void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
         DumpBanlist();
     }
 
+    uiInterface.InitMessage(_("Starting network threads..."));
+
     fAddressesInitialized = true;
 
     if (semOutbound == NULL) {