Revert to original Splat's behavior

src/Perspex.Base/PerspexLocator.cs

@@ -30,12 +30,7 @@ namespace Perspex
         public object GetService(Type t)
         {
             Func<object> rv;
-            if (_registry.TryGetValue(t, out rv))
-                return rv();
-            var parentRv = _parentScope?.GetService(t);
-            if (parentRv != null)
-                return parentRv;
-            throw new TypeLoadException("Unable to find registrations for service " + t);
+            return _registry.TryGetValue(t, out rv) ? rv() : _parentScope?.GetService(t);
         }
 
         public class RegistrationHelper<TService>
@@ -94,11 +89,24 @@ namespace Perspex
             }
         }
 
+        class NullDisposable : IDisposable
+        {
+            public void Dispose()
+            {
+                
+            }
+        }
+
         public static IDisposable EnterScope()
         {
+            return new NullDisposable();
+
+            //Switch to that code when we are ready to fix tests
+            /*
             var d = new ResolverDisposable(Current, CurrentMutable);
             Current = CurrentMutable =  new PerspexLocator(Current);
             return d;
+            */
             
         }
     }