Fix file contiguous judgement.

Signed-off-by: noctis <noctis.AKM@gmail.com>

diff --git a/libexfat/cluster.c b/libexfat/cluster.c
index 15cd9aa..66f808f 100644 (file)
--- a/libexfat/cluster.c
+++ b/libexfat/cluster.c
@@ -280,7 +280,7 @@ static int grow_file(struct exfat* ef, struct exfat_node* node,
                                shrink_file(ef, node, current + allocated, allocated);
                        return -ENOSPC;
                }
-               if (next != previous - 1 && node->is_contiguous)
+               if (next != previous + 1 && node->is_contiguous)
                {
                        /* it's a pity, but we are not able to keep the file contiguous
                           anymore */