Fix GH-17345: Bug #35916 was not completely fixed #18973
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Change the reproducer code in `bug35916.phpt` from `stream_bucket_append` to `stream_bucket_prepend` and you have the same bug. Furthermore, even in the append case the check is incorrect because the bucket can already be in the brigade at a position other than the tail. To solve this properly, unlink the brigade first and also use that as a condition to manage the refcount.
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Change the reproducer code in
bug35916.phptfromstream_bucket_appendtostream_bucket_prependand you have the same bug. Furthermore, even in the append case the check is incorrect because the bucket can already be in the brigade at a position other than the tail. To solve this properly, unlink the brigade first and also use that as a condition to manage the refcount.