Is output buffering still required in BePublicUrlController.php?

[stefanisak]

‪dumpFileContents() has been removed in TYPO3 10 and was therefore migrated to streamFile().

AFAIK streamFile returns a PSR-7 response object that already handles the output. So is there any reason to still call ob_start()?

741cd22#diff-fec66ec3406f8a33b116f572da3c744422e5e58870a408d0d9d14c88e5bf8a2dL84

In most cases it doesn't break anything, but I have the impression that with large files it sometimes causes a content length mismatch. But I can't really explain that one.