Update Umbraco to 7.12.2

WebCms/Umbraco/PartialViewMacros/Templates/ListChildPagesOrderedByProperty.cshtml

@@ -1,3 +1,4 @@
+@using Umbraco.Web
 @inherits Umbraco.Web.Macros.PartialViewMacroPage
 
 @*
@@ -15,12 +16,15 @@
 @{ var propertyAlias = Model.MacroParameters["propertyAlias"]; }
 @if (propertyAlias != null)
 {
-    var selection = CurrentPage.Children.Where("Visible").OrderBy(propertyAlias);
+    var selection = Model.Content.Children.Where(x => x.IsVisible()).OrderBy(x => x.GetPropertyValue(propertyAlias.ToString())).ToArray();
 
-    <ul>
-        @foreach (var item in selection)
-        {
-            <li><a href="@item.Url">@item.Name</a></li>
-        }
-    </ul>
+    if (selection.Length > 0)
+    {
+        <ul>
+            @foreach (var item in selection)
+            {
+                <li><a href="@item.Url">@item.Name</a></li>
+            }
+        </ul>
+    }
 }