When finding SerializationMap for resolved type, use type as the key rather than name.

Make the fixed WCF test show more specific failure details.

mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/XmlFormatterDeserializer.cs

@@ -177,7 +177,7 @@ namespace System.Runtime.Serialization
 
 		object DeserializeByMap (QName name, Type type, XmlReader reader)
 		{
-			SerializationMap map = types.FindUserMap (type); // use type rather than name as the type could be a "resolved" one.
+			SerializationMap map = resolved_qnames.ContainsKey (name) ? types.FindUserMap (type) : types.FindUserMap (name); // use type when the name is "resolved" one. Otherwise use name (there are cases that type cannot be resolved by type).
 			if (map == null && (name.Name.StartsWith ("ArrayOf", StringComparison.Ordinal) ||
 			    name.Namespace == KnownTypeCollection.MSArraysNamespace ||
 			    name.Namespace.StartsWith (KnownTypeCollection.DefaultClrNamespaceBase, StringComparison.Ordinal))) {

mcs/class/System.ServiceModel/Test/FeatureBased/Features.Serialization/KnownTypeTest.cs

@@ -22,7 +22,7 @@ namespace MonoTests.Features.Serialization
 
 			Point2D r = Client.Move (p1, p2);
 			Assert.IsNotNull (r, "#1");
-			Assert.IsTrue (r is AdvPoint2D, "#2");
+			Assert.AreEqual (typeof (AdvPoint2D), r.GetType (), "#2");
 			Assert.AreEqual (((AdvPoint2D) r).ZeroDistance, 5, "#3");
 
 		}