[PATCH 3/3] erofs-utils: allow blkaddr == EROFS_NULL_ADDR for zpacking in write_compacted_indexes()

[Noboru Asai]

With ztailpacking, the value of blkaddr corresponding to the ztailpacking block
in the extent list is EROFS_NULL_ADDR(-1), allow this value in 
write_compacted_indexes()
function.

Signed-off-by: Noboru Asai <a...@sijam.com>
---
 lib/compress.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/compress.c b/lib/compress.c
index d745e5b..5b70490 100644
--- a/lib/compress.c
+++ b/lib/compress.c
@@ -790,7 +790,8 @@ static void *write_compacted_indexes(u8 *out,
                        *dummy_head = true;
                        update_blkaddr = false;
 
-                       if (cv[i].u.blkaddr != blkaddr) {
+                       if (cv[i].u.blkaddr != EROFS_NULL_ADDR &&
+                           cv[i].u.blkaddr != blkaddr) {
                                if (i + 1 != vcnt)
                                        DBG_BUGON(!final);
                                DBG_BUGON(cv[i].u.blkaddr);
-- 
2.44.0