remove duplicate condition

src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/XamlIlBindingPathHelper.cs

@@ -198,24 +198,21 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions
                     case BindingExpressionGrammar.AncestorNode ancestor:
                         if (ancestor.Namespace is null && ancestor.TypeName is null)
                         {
-                            if (ancestor.Namespace is null && ancestor.TypeName is null)
+                            var styledElementType = context.GetAvaloniaTypes().StyledElement;
+                            var ancestorType = context
+                                .ParentNodes()
+                                .OfType<XamlAstConstructableObjectNode>()
+                                .Where(x => styledElementType.IsAssignableFrom(x.Type.GetClrType()))
+                                .Skip(1)
+                                .ElementAtOrDefault(ancestor.Level)
+                                ?.Type.GetClrType();
+
+                            if (ancestorType is null)
                             {
-                                var styledElementType = context.GetAvaloniaTypes().StyledElement;
-                                var ancestorType = context
-                                    .ParentNodes()
-                                    .OfType<XamlAstConstructableObjectNode>()
-                                    .Where(x => styledElementType.IsAssignableFrom(x.Type.GetClrType()))
-                                    .Skip(1)
-                                    .ElementAtOrDefault(ancestor.Level)
-                                    ?.Type.GetClrType();
-
-                                if (ancestorType is null)
-                                {
-                                    throw new XamlX.XamlParseException("Unable to resolve implicit ancestor type based on XAML tree.", lineInfo);
-                                }
-
-                                nodes.Add(new FindAncestorPathElementNode(ancestorType, ancestor.Level));
+                                throw new XamlX.XamlParseException("Unable to resolve implicit ancestor type based on XAML tree.", lineInfo);
                             }
+
+                            nodes.Add(new FindAncestorPathElementNode(ancestorType, ancestor.Level));
                         }
                         else
                         {
@@ -622,10 +619,10 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions
             private readonly IXamlAstValueNode _rawSource;
 
             public RawSourcePathElementNode(IXamlAstValueNode rawSource)
-                :base(rawSource)
+                : base(rawSource)
             {
                 _rawSource = rawSource;
-                
+
             }
 
             public IXamlType Type => _rawSource.Type.GetClrType();