mapfile - Fix off-by-one error in RebuildMap

"mdadm -Ir" would get the path for md0 wrong because it
went looking for mdp(-1) by mistake.

Signed-off-by NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/mapfile.c b/mapfile.c
index 3a26c6d..112d385 100644
--- a/mapfile.c
+++ b/mapfile.c
@@ -331,7 +331,7 @@ void RebuildMap(void)
 			if (ok != 0)
 				continue;
 			st->ss->getinfo_super(st, &info);
-			if (md->devnum > 0)
+			if (md->devnum >= 0)
 				path = map_dev(MD_MAJOR, md->devnum, 0);
 			else
 				path = map_dev(mdp, (-1-md->devnum)<< 6, 0);