8024255: When a keyword is used as object property name, the property can not be deleted
Reviewed-by: jlaskey, lagergren
[object Object]
Error
at func (test/script/basic/JDK-8020437.js:48)
at f (test/script/basic/JDK-8020437.js:41)
at <program> (test/script/basic/JDK-8020437.js:37)