dm-raid1.c: fix NULL dereferences

This patch fixes two NULL dereferences introduced by commit
06386bbfd2441416875d0403d405c56822f6ebac and spotted by the Coverity
checker.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 file changed