Editorial: avoid duplicate SetFunctionName in {async,}generator metho…

…ds (#2463)

spec.html

@@ -13220,7 +13220,6 @@ <h1>
       <dl class="header">
       </dl>
       <emu-alg>
-        1. Perform ! SetFunctionName(_closure_, _key_).
         1. If _key_ is a Private Name, then
           1. Return PrivateElement { [[Key]]: _key_, [[Kind]]: ~method~, [[Value]]: _closure_ }.
         1. Else,
@@ -22992,6 +22991,7 @@ <h1>Runtime Semantics: MethodDefinitionEvaluation</h1>
       <emu-grammar>MethodDefinition : ClassElementName `(` UniqueFormalParameters `)` `{` FunctionBody `}`</emu-grammar>
       <emu-alg>
         1. Let _methodDef_ be ? DefineMethod of |MethodDefinition| with argument _object_.
+        1. Perform ! SetFunctionName(_methodDef_.[[Closure]], _methodDef_.[[Key]]).
         1. Return ? DefineMethodProperty(_methodDef_.[[Key]], _object_, _methodDef_.[[Closure]], _enumerable_).
       </emu-alg>
       <emu-grammar>MethodDefinition : `get` ClassElementName `(` `)` `{` FunctionBody `}`</emu-grammar>
@@ -23070,6 +23070,7 @@ <h1>Runtime Semantics: MethodDefinitionEvaluation</h1>
         1. Let _sourceText_ be the source text matched by |AsyncMethod|.
         1. Let _closure_ be ! OrdinaryFunctionCreate(%AsyncFunction.prototype%, _sourceText_, |UniqueFormalParameters|, |AsyncFunctionBody|, ~non-lexical-this~, _scope_, _privateScope_).
         1. Perform ! MakeMethod(_closure_, _object_).
+        1. Perform ! SetFunctionName(_closure_, _propKey_).
         1. Return ? DefineMethodProperty(_propKey_, _object_, _closure_, _enumerable_).
       </emu-alg>
     </emu-clause>