Avoid structuredClone

Signed-off-by: Matteo Collina <[email protected]>

lib/fetch/body.js

@@ -274,17 +274,13 @@ function cloneBody (body) {
 
   // 1. Let « out1, out2 » be the result of teeing body’s stream.
   const [out1, out2] = body.stream.tee()
-  const out2Clone = structuredClone(out2, { transfer: [out2] })
-  // This, for whatever reasons, unrefs out2Clone which allows
-  // the process to exit by itself.
-  const [, finalClone] = out2Clone.tee()
 
   // 2. Set body’s stream to out1.
   body.stream = out1
 
   // 3. Return a body whose stream is out2 and other members are copied from body.
   return {
-    stream: finalClone,
+    stream: out2,
     length: body.length,
     source: body.source
   }