Ignore Target elements that don't have a name

It could be a task parameter or anything else really

Author: KirillOsenkov

src/StructuredLogger/Analyzers/TargetGraph.cs

@@ -260,6 +260,11 @@ public static TargetGraph ParseXml(string text, Dictionary<string, string> props
             foreach (var target in targets)
             {
                 var name = GetAttribute(target, "Name");
+                if (string.IsNullOrWhiteSpace(name))
+                {
+                    continue;
+                }
+
                 var beforeTargetsText = GetAttribute(target, "BeforeTargets");
                 var afterTargetsText = GetAttribute(target, "AfterTargets");
                 var dependsOnTargetsText = GetAttribute(target, "DependsOnTargets");