Fix potentially stale tv_key in deleteProperty
Fix potentially stale tv_key in deleteProperty

markand/duktape,markand/duktape,markand/duktape,svaarala/duktape,markand/duktape,svaarala/duktape,svaarala/duktape,markand/duktape,svaarala/duktape,svaarala/duktape,markand/duktape,svaarala/duktape,markand/duktape,markand/duktape,svaarala/duktape,markand/duktape,markand/duktape,svaarala/duktape,svaarala/duktape