fixup

Author: ronag

test/parallel/test-stream-pipeline.js

@@ -1463,12 +1463,7 @@ const tsp = require('timers/promises');
 
     const stream = await pipelinePromise(read, duplex);
 
-    let ret = ''
-    for await (const x of stream) {
-      ret += x;
-    }
-
-    assert.strictEqual(ret, 'data');
+    assert.strictEqual(await stream.text(), 'data');
   }
 
   run();