C#: Fix logging in assets file parsing

Author: tamasvajk

csharp/extractor/Semmle.Extraction.CSharp.DependencyFetching/Assets.cs

@@ -189,13 +189,13 @@ private void AddFrameworkDependencies(JObject json, string jsonPath)
         /// (together with used package information) required for compilation.
         /// </summary>
         /// <returns>True if parsing succeeds, otherwise false.</returns>
-        public bool TryParse(string json)
+        public bool TryParse(string json, string? jsonPath = null)
         {
             try
             {
                 var obj = JObject.Parse(json);
-                AddPackageDependencies(obj, json);
-                AddFrameworkDependencies(obj, json);
+                AddPackageDependencies(obj, jsonPath ?? json);
+                AddFrameworkDependencies(obj, jsonPath ?? json);
                 return true;
             }
             catch (Exception e)
@@ -228,7 +228,7 @@ public void AddDependencies(string asset)
         {
             if (TryReadAllText(asset, logger, out var json))
             {
-                TryParse(json);
+                TryParse(json, asset);
             }
         }