fixes a null ref

Yavsc/Views/Shared/DisplayTemplates/PerformerProfile.cshtml

@@ -2,7 +2,7 @@
 
 <div class="performer @(Model.Active?"active":"inactive")">
      
-              <img src="~/Avatars/@(Model.Performer.UserName).xs.png" alt="avatar"> 
+              <img src="~/Avatars/@(Model.Performer?.UserName).xs.png" alt="avatar"> 
      
              @Model.Performer?.UserName 
 
@@ -17,12 +17,12 @@
         @if (Model.WebSite!=null) { 
             <li>@SR["WebSite"]: @Model.WebSite</li>
         }
+        @if (Model.Performer != null) {
             @if (Model.Performer.Posts!=null) {
             <li>  <a asp-controller="Blogspot" asp-action="UserPosts" 
             asp-route-id="@Model.Performer.UserName">@SR["His blog"]</a>
             </li>
             }
-        @if (Model.Performer != null) {
             @if (!string.IsNullOrEmpty(
                 Model.Performer.DedicatedGoogleCalendar))
                 {