Do not create a List.

Author: drieseng

src/Renci.SshNet/Abstractions/ReflectionAbstraction.cs

@@ -16,7 +16,7 @@ public static IEnumerable<T> GetCustomAttributes<T>(this Type type, bool inherit
             return type.GetTypeInfo().GetCustomAttributes<T>(inherit);
 #else
             var attributes = type.GetCustomAttributes(typeof(T), inherit);
-            return new List<T>(attributes.Cast<T>());
+            return attributes.Cast<T>();
 #endif
         }
     }