[NUI] Fix svace issue (#792)

Signed-off-by: huiyu.eun <huiyu.eun@samsung.com>

diff --git a/src/Tizen.NUI/src/internal/Xaml/CreateValuesVisitor.cs b/src/Tizen.NUI/src/internal/Xaml/CreateValuesVisitor.cs
index a501ff2..bd4c9b3 100755 (executable)
--- a/src/Tizen.NUI/src/internal/Xaml/CreateValuesVisitor.cs
+++ b/src/Tizen.NUI/src/internal/Xaml/CreateValuesVisitor.cs
@@ -315,7 +315,7 @@ namespace Tizen.NUI.Xaml
                         enode.SkipProperties.Add(name);
                     var value = Context.Values[node];
                     var serviceProvider = new XamlServiceProvider(enode, Context);
-                    var convertedValue = value?.ConvertTo(parameter.ParameterType, () => parameter, serviceProvider);
+                    var convertedValue = value?.ConvertTo(parameter?.ParameterType, () => parameter, serviceProvider);
                     array[i] = convertedValue;
                 }
                 return array;