C#: Also check the namespace of the InlineArrayAttribute.

Author: michaelnebel

csharp/extractor/Semmle.Extraction.CSharp/SymbolExtensions.cs

@@ -527,7 +527,11 @@ public static bool IsUnboundReadOnlySpan(this ITypeSymbol type) =>
         public static bool IsInlineArray(this ITypeSymbol type)
         {
             var attributes = type.GetAttributes();
-            var isInline = attributes.Any(attribute => attribute.AttributeClass?.Name == "InlineArrayAttribute");
+            var isInline = attributes.Any(attribute =>
+                    attribute.AttributeClass is INamedTypeSymbol nt &&
+                    nt.Name == "InlineArrayAttribute" &&
+                    nt.ContainingNamespace.ToString() == "System.Runtime.CompilerServices"
+            );
             return isInline;
         }