[8825] At fail start db connections stop all started db connection threads.

This will restore state before start Db function call and prevent crashes
at delayed access to log singleton in case outdated DB structure detection.

src/realmd/Main.cpp

@@ -332,7 +332,11 @@ bool StartDB()
     }
 
     if(!loginDatabase.CheckRequiredField("realmd_db_version",REVISION_DB_REALMD))
+    {
+        ///- Wait for already started DB delay threads to end
+        loginDatabase.HaltDelayThread();
         return false;
+    }
 
     return true;
 }