reiserfsprogs: fix set-but-not-used gcc warnings

Signed-off-by: Jeff Mahoney <jeffm@suse.com>

fsck/main.c

@@ -751,11 +751,8 @@ static void reiserfsck_replay_journal (reiserfs_filsys_t * fs) {
 
 static int the_end (reiserfs_filsys_t * fs)
 {
-    struct reiserfs_super_block * sb;
     int ret = EXIT_FIXED;
 
-    sb = fs->fs_ondisk_sb;
-
     /* put bitmap and objectid map on place */
     reiserfs_delete_bitmap (fs->fs_bitmap2);
     fs->fs_bitmap2 = fsck_new_bitmap (fs);