-Fixed objects created with paramatized constructors to not set properties that aren't in JSON

Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs

@@ -4277,5 +4277,38 @@ keyword such as type of business.""
       Assert.AreEqual(1939, commentTestClass.StartYear);
       Assert.AreEqual(63, commentTestClass.Values.Count);
     }
+
+    class DTOWithParameterisedConstructor
+    {
+      public DTOWithParameterisedConstructor(string A)
+      {
+        this.A = A;
+        B = 2;
+      }
+
+      public string A { get; set; }
+      public int? B { get; set; }
+    }
+
+    class DTOWithoutParameterisedConstructor
+    {
+      public DTOWithoutParameterisedConstructor()
+      {
+        B = 2;
+      }
+
+      public string A { get; set; }
+      public int? B { get; set; }
+    }
+
+    [Test]
+    public void PopulationBehaviourForOmittedPropertiesIsTheSameForParameterisedConstructorAsForDefaultConstructor()
+    {
+      string json = @"{A:""Test""}";
+
+      var withoutParameterisedConstructor = JsonConvert.DeserializeObject<DTOWithoutParameterisedConstructor>(json);
+      var withParameterisedConstructor = JsonConvert.DeserializeObject<DTOWithParameterisedConstructor>(json);
+      Assert.AreEqual(withoutParameterisedConstructor.B, withParameterisedConstructor.B);
+    }
   }
 }

Src/Newtonsoft.Json/Serialization/JsonSerializerInternalReader.cs

@@ -865,8 +865,7 @@ namespace Newtonsoft.Json.Serialization
 
       Type objectType = contract.UnderlyingType;
 
-      // create a dictionary to put retrieved values into
-      IDictionary<JsonProperty, object> propertyValues = contract.Properties.Where(p => !p.Ignored).ToDictionary(kv => kv, kv => (object)null);
+      IDictionary<JsonProperty, object> propertyValues = new Dictionary<JsonProperty, object>();
 
       bool exit = false;
       do