Check options to see if we can visit function parameters.

src/Bridge/ASTVisitor.cs

@@ -278,6 +278,7 @@ namespace CppSharp
             if (retType.Type != null)
                 retType.Type.Visit(this, retType.Qualifiers);
 
+            if (Options.VisitFunctionParameters)
                 foreach (var param in function.Parameters)
                     param.Visit(this);