Stopped at an ignored base when getting the root one.

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

src/AST/ClassExtensions.cs

@@ -43,11 +43,11 @@ namespace CppSharp.AST
             }
         }
 
-        public static Class GetRootBase(this Class @class)
+        public static Class GetNonIgnoredRootBase(this Class @class)
         {
             while (true)
             {
-                if (@class.BaseClass == null)
+                if (!@class.HasNonIgnoredBase || @class.BaseClass == null)
                     return @class;
 
                 @class = @class.BaseClass;

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -1784,7 +1784,7 @@ namespace CppSharp.Generators.CSharp
 
             if (@class.IsRefType)
             {
-                var @base = @class.GetRootBase();
+                var @base = @class.GetNonIgnoredRootBase();
                 var className = @base.IsAbstractImpl ? @base.BaseClass.Name : @base.Name;
 
                 // Use interfaces if any - derived types with a this class as a seconary base, must be compatible with the map

tests/CSharpTemp/CSharpTemp.h

@@ -230,6 +230,10 @@ private:
     const char* _name;
 };
 
+class TestObjectMapWithClassDerivedFromStruct : public QGenericArgument
+{
+};
+
 #define DEFAULT_INT (2 * 1000UL + 500UL)
 
 namespace Qt