ntfs-3g_apply.c: avoid warning about sacl_offset unused

diff --git a/src/ntfs-3g_apply.c b/src/ntfs-3g_apply.c
index 5833d0419616e1bf53920d9ebb11c4bd2d14d3c9..e38ad2885f7883d3d87892c44e120c023e37187c 100644 (file)
--- a/src/ntfs-3g_apply.c
+++ b/src/ntfs-3g_apply.c
@@ -124,7 +124,10 @@ sid_size(const wimlib_SID *sid)
 static u8 *
 sd_fixup(const u8 *_desc, size_t *size_p)
 {
-       u32 owner_offset, group_offset, dacl_offset, sacl_offset;
+       u32 owner_offset, group_offset, dacl_offset;
+#if !defined(HAVE_NTFS_MNT_RDONLY)
+       u32 sacl_offset;
+#endif
        bool owner_valid, group_valid;
        size_t size = *size_p;
        const wimlib_SECURITY_DESCRIPTOR_RELATIVE *desc =
@@ -141,10 +144,12 @@ sd_fixup(const u8 *_desc, size_t *size_p)
        else
                dacl_offset = 0;
 
+#if !defined(HAVE_NTFS_MNT_RDONLY)
        if (le16_to_cpu(desc->control) & wimlib_SE_SACL_PRESENT)
                sacl_offset = le32_to_cpu(desc->sacl_offset);
        else
                sacl_offset = 0;
+#endif
 
        /* Check if the security descriptor will be affected by one of the bugs.
         * If not, do nothing and return.