Added a test for protected members in secondary bases.

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

tests/CSharpTemp/CSharpTemp.Tests.cs

@@ -8,6 +8,14 @@ using Foo = CSharpTemp.Foo;
 
 public class CSharpTempTests : GeneratorTestFixture
 {
+    public class ExtendsWrapper : TestOverrideFromSecondaryBase
+    {
+        public ExtendsWrapper()
+        {
+            ProtectedFunction();
+        }
+    }
+
     [Test]
     public void TestIndexer()
     {

tests/CSharpTemp/CSharpTemp.cpp

@@ -487,6 +487,10 @@ void SecondaryBase::function()
 {
 }
 
+void SecondaryBase::protectedFunction()
+{
+}
+
 void TestOverrideFromSecondaryBase::VirtualMember()
 {
 }

tests/CSharpTemp/CSharpTemp.h

@@ -497,6 +497,8 @@ public:
     int property();
     void setProperty(int value);
     void function();
+protected:
+    void protectedFunction();
 };
 
 class DLL_API TestOverrideFromSecondaryBase : public Foo, public SecondaryBase