erofs-utils: fix random data in shared xattrs

There will be holes between xattr entry after EROFS_XATTR_ALIGN, so
we should clear shared xattrs buff to avoid random data.

Signed-off-by: Huang Jianan <huangjianan@oppo.com>
Signed-off-by: Guo Weichao <guoweichao@oppo.com>
Link: https://lore.kernel.org/r/20201127083334.32738-1-huangjianan@oppo.com
Reviewed-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Gao Xiang <hsiangkao@aol.com>
1 file changed