Editorial: OrdinaryDefineOwnProperty can't throw for ordinary objects…

… and arrays

`OrdinaryDefineOwnProperty` can return an abrupt completion if either
`O.[[GetOwnProperty]]` or `IsExtensible(O)` returns an abrupt completion. When
`O` is an ordinary object or an array, neither `O.[[GetOwnProperty]]` nor
`IsExtensible(O)` can return an abrupt completion, therefore
`OrdinaryDefineOwnProperty` is infallible.

spec.html

@@ -12678,7 +12678,7 @@ <h1>
         <dd>an ordinary object _O_</dd>
       </dl>
       <emu-alg>
-        1. Return ? OrdinaryDefineOwnProperty(_O_, _P_, _Desc_).
+        1. Return ! OrdinaryDefineOwnProperty(_O_, _P_, _Desc_).
       </emu-alg>
 
       <emu-clause id="sec-ordinarydefineownproperty" type="abstract operation">
@@ -14092,7 +14092,7 @@ <h1>
               1. Set _succeeded_ to ! OrdinaryDefineOwnProperty(_A_, *"length"*, _lengthDesc_).
               1. Assert: _succeeded_ is *true*.
             1. Return *true*.
-          1. Return ? OrdinaryDefineOwnProperty(_A_, _P_, _Desc_).
+          1. Return ! OrdinaryDefineOwnProperty(_A_, _P_, _Desc_).
         </emu-alg>
       </emu-clause>