Fix NullReferenceException on Unity enum serialization. #215

Author: yfakariya

CHANGES.txt

@@ -655,3 +655,4 @@ Release 0.9.0 RC1 T.B.D
   BUG FIXES
   * Fix constructor deserialization fails if the constructor parameters order is not lexical. Issue #233
   * Fix asynchronous multi dimensional array deserialization corruption.
+  * Fix enum serialization throws NullReferenceException in Unity. Issue #215.

src/MsgPack/Serialization/EnumMessagePackSerializer`1.cs

@@ -299,7 +299,7 @@ protected UnityEnumMessagePackSerializer( SerializationContext ownerContext, Typ
 
 			this._serializationMethod = serializationMethod;
 			this._underlyingType = Enum.GetUnderlyingType( targetType );
-			var members = Enum.GetValues(targetType ) as object[];
+			var members = Enum.GetValues( targetType );
 			this._serializationMapping = new Dictionary<object, string>( members.Length );
 			this._deserializationMapping = new Dictionary<string, object>( members.Length );
 			foreach ( var member in members )