ofc Type.EmptyTypes isn't PCL

Author: mythz

src/ServiceStack.Text/ReflectionExtensions.cs

@@ -1802,7 +1802,7 @@ public static Type GetCachedGenericType(this Type type, params Type[] argTypes)
                 throw new ArgumentException(type.FullName + " is not a Generic Type Definition");
 
             if (argTypes == null)
-                argTypes = Type.EmptyTypes;
+                argTypes = TypeConstants.EmptyTypeArray;
 
             var sb = StringBuilderThreadStatic.Allocate()
                 .Append(type.FullName);

src/ServiceStack.Text/TypeConstants.cs

@@ -13,7 +13,7 @@ public static class TypeConstants
         public static readonly bool[] EmptyBoolArray = new bool[0];
         public static readonly byte[] EmptyByteArray = new byte[0];
         public static readonly object[] EmptyObjectArray = new object[0];
-        public static readonly Type[] EmptyTypeArray = Type.EmptyTypes;
+        public static readonly Type[] EmptyTypeArray = new Type[0];
         public static readonly FieldInfo[] EmptyFieldInfoArray = new FieldInfo[0];
         public static readonly PropertyInfo[] EmptyPropertyInfoArray = new PropertyInfo[0];