diff --git a/ExternalProjects/iso-parser/ISODirectoryNode.cs b/ExternalProjects/iso-parser/ISODirectoryNode.cs
index e25864a637..1d6c01e60d 100644
--- a/ExternalProjects/iso-parser/ISODirectoryNode.cs
+++ b/ExternalProjects/iso-parser/ISODirectoryNode.cs
@@ -41,7 +41,6 @@ namespace ISOParser
 			// Read the directory entries
 			while (s.Position < ((this.Offset * ISOFile.SECTOR_SIZE) + this.Length))
 			{
-				ISONode node;
 				ISONodeRecord record;
 				
 				// Read the record
@@ -61,12 +60,7 @@ namespace ISOParser
 				else
 				{
 					// Check if we already have this node
-					if (visited.ContainsKey(record.OffsetOfData))
-					{
-						// Get the node
-						node = visited[record.OffsetOfData];
-					}
-					else
+					if (!visited.TryGetValue(record.OffsetOfData, out var node))
 					{
 						// Create the node from the record
 						if (record.IsFile())
diff --git a/ExternalProjects/iso-parser/ISOParser.csproj b/ExternalProjects/iso-parser/ISOParser.csproj
index 0bb694a66c..6ec88e14ed 100644
--- a/ExternalProjects/iso-parser/ISOParser.csproj
+++ b/ExternalProjects/iso-parser/ISOParser.csproj
@@ -4,7 +4,7 @@
 	</PropertyGroup>
 	<Import Project="../LibCommon.props" />
 	<PropertyGroup>
-		<NoWarn>$(NoWarn);MA0060;SA1413;SA1514</NoWarn> <!-- MA0060 is for implicitly discarded Stream.Read return value and should really be fixed; SA1413 and SA1514 are harmless lint rules -->
+		<NoWarn>$(NoWarn);MA0060;RCS1226;SA1413;SA1514</NoWarn> <!-- MA0060 is for implicitly discarded Stream.Read return value and should really be fixed; RCS1226 is for malformed doc comment and should really be fixed; SA1413 and SA1514 are harmless lint rules -->
 		<Nullable>disable</Nullable>
 	</PropertyGroup>
 </Project>
diff --git a/References/ISOParser.dll b/References/ISOParser.dll
index 168c1ac10d..db0e6a0487 100644
Binary files a/References/ISOParser.dll and b/References/ISOParser.dll differ