Resolve analyzer warnings.

Author: tillig

src/Autofac/Features/Scanning/OpenGenericScanningRegistrationExtensions.cs

@@ -162,7 +162,7 @@ public static IRegistrationBuilder<TLimit, OpenGenericScanningActivatorData, TRe
             .As(candidateType => (Service)new KeyedService(serviceKeyMapping(candidateType), candidateType));
     }
 
-    private static void ScanAssembliesForOpenGenerics(IEnumerable<Assembly> assemblies, IComponentRegistryBuilder cr, IRegistrationBuilder<object, OpenGenericScanningActivatorData, DynamicRegistrationStyle> rb)
+    private static void ScanAssembliesForOpenGenerics(IEnumerable<Assembly> assemblies, IComponentRegistryBuilder cr, RegistrationBuilder<object, OpenGenericScanningActivatorData, DynamicRegistrationStyle> rb)
     {
         rb.ActivatorData.Filters.Add(t =>
             rb.RegistrationData.Services.OfType<IServiceWithType>().All(swt =>

test/Autofac.Test/Core/DependencyResolutionExceptionTests.cs

@@ -42,7 +42,7 @@ public void ExceptionMessageUnwrapsNestedResolutionFailures()
         builder.Register(c => new B(c.Resolve<A>()));
         builder.RegisterType<C>();
 
-        Exception ex;
+        DependencyResolutionException ex;
         using (var container = builder.Build())
         {
             ex = Assert.Throws<DependencyResolutionException>(() => container.Resolve<C>());