configure: correctly set LD_NO_UNDEFINED

Commit 11623be934f85 was meant to have this hunk, which
I accidently dropped during git rebase.

Cc: 10.2 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Jonathan Gray <jsg@jsg.id.au>
1 file changed