Fixed #619 custom attributes on enum members

ICSharpCode.Decompiler/Ast/AstBuilder.cs

@@ -331,6 +331,7 @@ namespace ICSharpCode.Decompiler.Ast
 						}
 					} else {
 						EnumMemberDeclaration enumMember = new EnumMemberDeclaration();
+						ConvertCustomAttributes(enumMember, field);
 						enumMember.AddAnnotation(field);
 						enumMember.Name = CleanName(field.Name);
 						long memberValue = (long)CSharpPrimitiveCast.Cast(TypeCode.Int64, field.Constant, false);