Ensure we add the actual definition in.

src/EditorFeatures/Core/GoToDefinition/GoToDefinitionHelpers.cs

@@ -70,6 +70,8 @@ internal static class GoToDefinitionHelpers
                 definitions.AddIfNotNull(thirdPartyItem);
             }
 
+            definitions.Add(definitionItem);
+
             var presenter = GetFindUsagesPresenter(streamingPresenters);
             var title = string.Format(EditorFeaturesResources._0_declarations,
                 FindUsagesHelpers.GetDisplayName(symbol));