NPath optimization when looking for the search label

                       Method |     Mean |    Error |   StdDev |
----------------------------- |---------:|---------:|---------:|
 OriginalTreeBuilderBenchmark | 65.67 ms | 1.296 ms | 1.730 ms |
  CurrentTreeBuilderBenchmark | 55.80 ms | 1.102 ms | 1.683 ms |

Author: StanleyGoldman

src/GitHub.Api/UI/TreeBuilder.cs

@@ -49,10 +49,11 @@ internal static void BuildChildNode(FileTreeNode parent, FileTreeNode node, List
             {
                 // Look for a branch matching our root in the existing children
                 var found = false;
+                var searchLabel = nodePath.Parent.Combine(nodePath.FileNameWithoutExtension);
                 foreach (var child in parent.Children)
                 {
                     // If we found the branch, continue building from that branch
-                    if (child.Label.Equals(nodePath.Parent.Combine(nodePath.FileNameWithoutExtension)))
+                    if (child.Label.Equals(searchLabel))
                     {
                         found = true;
                         BuildChildNode(child, node, foldedTreeEntries1, stateChangeCallback1);