If sudo is used in the pseudo environment, as done in image tests when
the user hasn't pre-setup the tap device, ensure the LD_PRELOAD error
message isn't seen by the user.
(From OE-Core rev: 86234ac514cbd33a0058f3b74f158daeda325c0d)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>