Misc cleanups

Source/Framework/Logging/Appender.cs

@@ -78,7 +78,7 @@ class FileAppender : Appender, IDisposable
     {
         lock (locker)
         {
-            var logBytes = Encoding.Unicode.GetBytes(message.prefix + message.text + "\r\n");
+            var logBytes = Encoding.UTF8.GetBytes(message.prefix + message.text + "\r\n");
 
             if (_dynamicName)
             {

Source/Game/Spells/SpellManager.cs

@@ -2377,7 +2377,7 @@ namespace Game.Entities
                     uint attributes = result.Read<uint>(1);
 
                     var spells = _GetSpellInfo(spellId);
-                    if (spells == null)
+                    if (spells.Empty())
                     {
                         Log.outError(LogFilter.Sql, "Table `spell_custom_attr` has wrong spell (entry: {0}), ignored.", spellId);
                         continue;