Prevent gcc uninit compiler warning in zfs_range_unlock_reader().

diff --git a/module/zfs/zfs_rlock.c b/module/zfs/zfs_rlock.c
index 4de8d8a2dfed91155d4f1d7b43eece03c608fcaa..1e4988d7fd1261ec5337ab2d101c5684baefd06c 100644 (file)
--- a/module/zfs/zfs_rlock.c
+++ b/module/zfs/zfs_rlock.c
@@ -460,7 +460,7 @@ static void
 zfs_range_unlock_reader(znode_t *zp, rl_t *remove)
 {
        avl_tree_t *tree = &zp->z_range_avl;
-       rl_t *rl, *next;
+       rl_t *rl, *next = NULL;
        uint64_t len;
 
        /*