Limit to non-strict code

Author: rwaldron

spec.html

@@ -43171,13 +43171,13 @@ <h1>AssignmentTargetType of LeftHandSideExpression : CallExpression</h1>
       <emu-grammar>AssignmentExpression : LeftHandSideExpression = AssignmentExpression</emu-grammar>
       <ol>
         <li>
-          If AssignmentTargetType of |LeftHandSideExpression| is not ~simple~, throw a *ReferenceError* exception.
+          If AssignmentTargetType of |LeftHandSideExpression| is not ~simple~ and occurs in non-strict code, throw a *ReferenceError* exception.
         </li>
       </ol>
       <emu-grammar>AssignmentExpression : LeftHandSideExpression AssignmentOperator AssignmentExpression</emu-grammar>
       <ol>
         <li>
-          If AssignmentTargetType of |LeftHandSideExpression| is not ~simple~, throw a *ReferenceError* exception.
+          If AssignmentTargetType of |LeftHandSideExpression| is not ~simple~ and occurs in non-strict code, throw a *ReferenceError* exception.
         </li>
       </ol>
     </emu-annex>