[enumification] filter final ints without explicit constant value. (#…

…1085)

There were final fields that actually didn't give value in the API XML.

build-tools/enumification-helpers/generate-const-list-2.cs

@@ -60,7 +60,7 @@ public static void Main (string [] args)
 			}
 		}
 
-		consts = consts.Where (f => f.IsFinal).ToArray ();
+		consts = consts.Where (f => f.IsFinal && !string.IsNullOrEmpty (f.Value)).ToArray ();
 
 		var fields = new List<string> ();
 		string package = null, type = null;