Fixed the generated C# when a protected constructor has a parameter with a protected type.

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

src/Generator/Passes/ConstructorToConversionOperatorPass.cs

@@ -12,8 +12,10 @@ namespace CppSharp.Passes
     {
         public override bool VisitMethodDecl(Method method)
         {
-            if (AlreadyVisited(method) || !method.IsGenerated || !method.IsConstructor ||
-                method.IsCopyConstructor)
+            if (AlreadyVisited(method) || !method.IsGenerated || !method.IsConstructor
+                || method.IsCopyConstructor
+                // conversion operators can only be public
+                || method.Access != AccessSpecifier.Public)
                 return false;
 
             var @params = method.Parameters.Where(p => p.Kind == ParameterKind.Regular).ToList();

tests/Common/Common.h

@@ -1312,3 +1312,13 @@ public:
     ~HasVirtualFunctionWithBoolParams();
     virtual bool virtualFunctionWithBoolParamAndReturnsBool(bool testBool);
 };
+
+class HasProtectedCtorWithProtectedParam
+{
+protected:
+    enum ProtectedEnum
+    {
+        Member
+    };
+    HasProtectedCtorWithProtectedParam(ProtectedEnum protectedParam);
+};