fix: fixed error when reading data of ETCO frame

Author: MrCSharp22

src/TagLib/Id3v2/FrameFactory.cs

@@ -295,8 +295,9 @@ public static Frame CreateFrame (ByteVector data, File file,
 				return new UrlLinkFrame(data, position,
 					header, version);
 
+			// Event timing codes (frames 4.6)
 			if (header.FrameId == FrameType.ETCO)
-				return new EventTimeCodesFrame(data, offset, header,
+				return new EventTimeCodesFrame(data, position, header,
 					version);
 
 			return new UnknownFrame (data, position, header,

src/TagLib/Id3v2/Frames/EventTimeCodesFrame.cs

@@ -110,9 +110,9 @@ protected override void ParseFields(ByteVector data, byte version)
 			timestampFormat = (TimestampFormat)data.Data[0];
 
 			var incomingEventsData = data.Mid(1);
-			for (var i = 0; i < incomingEventsData.Count; i++)
+			for (var i = 0; i < incomingEventsData.Count - 1; i++)
 			{
-				var eventType = (EventType)incomingEventsData.Data[1];
+				var eventType = (EventType)incomingEventsData.Data[i];
 				i++;
 
 				var timestampData = new ByteVector(incomingEventsData.Data[i],