Fixed issue with handling NDR structures.

Author: tyranid

NtApiDotNet/Ndr/Marshal/NdrMarshalBuffer.cs

@@ -873,7 +873,7 @@ public void WriteVaryingArray<T>(T[] array, long variance) where T : struct
             {
                 WriteVaryingCharArray(array.Cast<T, char>(), variance);
             }
-            else if (typeof(T) == typeof(INdrStructure))
+            else if (typeof(INdrStructure).IsAssignableFrom(typeof(T)))
             {
                 using (var queue = _deferred_writes.Push())
                 {
@@ -1045,7 +1045,7 @@ public void WriteConformantArray<T>(T[] array, long conformance) where T : struc
             {
                 WriteConformantCharArray(array.Cast<T, char>(), conformance);
             }
-            else if (typeof(T) == typeof(INdrStructure))
+            else if (typeof(INdrStructure).IsAssignableFrom(typeof(T)))
             {
                 using (var queue = _deferred_writes.Push())
                 {
@@ -1155,7 +1155,7 @@ public void WriteConformantVaryingArray<T>(T[] array, long conformance, long var
             {
                 WriteConformantVaryingCharArray(array.Cast<T, char>(), conformance, variance);
             }
-            else if (typeof(T) == typeof(INdrStructure))
+            else if (typeof(INdrStructure).IsAssignableFrom(typeof(T)))
             {
                 using (var queue = _deferred_writes.Push())
                 {

NtApiDotNet/Ndr/Marshal/NdrUnmarshalBuffer.cs

@@ -561,7 +561,7 @@ public T[] ReadVaryingArray<T>() where T : struct
             {
                 return ReadVaryingCharArray().Cast<char, T>();
             }
-            else if (typeof(T) == typeof(INdrStructure))
+            else if (typeof(INdrStructure).IsAssignableFrom(typeof(T)))
             {
                 using (var queue = _deferred_reads.Push())
                 {
@@ -675,7 +675,7 @@ public T[] ReadConformantVaryingArray<T>() where T : struct
             {
                 return ReadConformantVaryingCharArray().Cast<char, T>();
             }
-            else if (typeof(T) == typeof(INdrStructure))
+            else if (typeof(INdrStructure).IsAssignableFrom(typeof(T)))
             {
                 using (var queue = _deferred_reads.Push())
                 {