[PATCH Hurd] Fix invalid port deallocation in `symlink'

[Ludovic Courtès]

Hello,

Currently, running ‘ln -s foo bar’ on a read-only file system leads to
an invalid port deallocation.

This patch fixes that.

Thanks,
Ludo’.

2012-03-17  Ludovic Courtès  <ludo@gnu.org>

	* sysdeps/mach/hurd/symlink.c (__symlink): Deallocate NODE only
	when it is non-null.

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