Fixed a bug when having a field with a protected ignored type.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -646,6 +646,8 @@ namespace CppSharp.Generators.CSharp
         public void GenerateClassProlog(Class @class)
         {
             Write(@class.IsInternal ? "internal " : Helpers.GetAccess(@class.Access));
+            if (@class.Access == AccessSpecifier.Protected)
+                Write("internal ");
             Write("unsafe ");
 
             if (Driver.Options.GenerateAbstractImpls && @class.IsAbstract)

tests/CSharpTemp/CSharpTemp.h

@@ -468,3 +468,13 @@ private:
     HasVirtualDtor2* hasVirtualDtor2;
     Bar* bar;
 };
+
+class HasProtectedNestedAnonymousType
+{
+protected:
+    union
+    {
+        int i;
+        double d;
+    } u;
+};