Changed FromObjectDictionary<T> to return T (#501)

Changed FromObjectDictionary<T> to return T instead of an object.

Author: KevinHoward

src/ServiceStack.Text/PlatformExtensions.cs

@@ -1347,9 +1347,9 @@ public static object FromObjectDictionary(this Dictionary<string, object> values
             return to;
         }
 
-        public static object FromObjectDictionary<T>(this Dictionary<string, object> values)
+        public static T FromObjectDictionary<T>(this Dictionary<string, object> values)
         {
-            return values.FromObjectDictionary(typeof(T));
+            return (T)values.FromObjectDictionary(typeof(T));
         }
 
         private static ObjectDictionaryDefinition CreateObjectDictionaryDefinition(Type type)

tests/ServiceStack.Text.Tests/AutoMappingObjectDictionaryTests.cs

@@ -37,7 +37,7 @@ public void Can_convert_Cart_to_ObjectDictionary()
             Assert.That(((Car)map["Car"]).Age, Is.EqualTo(dto.Car.Age));
             Assert.That(((Car)map["Car"]).Name, Is.EqualTo(dto.Car.Name));
 
-            var fromDict = (User)map.FromObjectDictionary(typeof(User));
+            var fromDict = map.FromObjectDictionary<User>();
             Assert.That(fromDict.FirstName, Is.EqualTo(dto.FirstName));
             Assert.That(fromDict.LastName, Is.EqualTo(dto.LastName));
             Assert.That(fromDict.Car.Age, Is.EqualTo(dto.Car.Age));