lvmlockd: fix missing lock_type null check

Missed checking if vg->lock_type is NULL in commit db8d3bdfa:
  lvmlockd: enable mirror split and merge with dlm lock_type

diff --git a/lib/metadata/raid_manip.c b/lib/metadata/raid_manip.c
index 4d58d74b247608307ed237ca7041f3e837159d00..53aa4f134144c6bd1341cdf9e821448e55b83758 100644 (file)
--- a/lib/metadata/raid_manip.c
+++ b/lib/metadata/raid_manip.c
@@ -3395,7 +3395,7 @@ int lv_raid_split(struct logical_volume *lv, int yes, const char *split_name,
 
        lvl->lv->name = split_name;
 
-       if (!strcmp(lv->vg->lock_type, "dlm"))
+       if (lv->vg->lock_type && !strcmp(lv->vg->lock_type, "dlm"))
                lvl->lv->lock_args = lv->lock_args;
 
        if (!vg_write(lv->vg)) {