Bug#98071: symlink to itself hangs

[Roland McGrath]

It looks like the ELOOP check is not being done for absolute symlinks.
I think there was also a port leak in the ELOOP error case that did work
(e.g. for "ln -s x x; ls -L x", ls would leak a send right).

I've just checked in a fix for this to libc, but I have not tested it.
Please tell me if it works or not.


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