[PATCH] Correctly handle d_path error returns

[PATCH] Correctly handle d_path error returns

There's some minor bug in the d_path handling (the nfsd one may not the the
correct fix, there's no failure path for it, so I just terminate the
string, and the last one in the audit subsystem is just a robustness
cleanup if somebody will extend d_path in the future, right now it's a
noop).

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>