libmount: don't use NULL pointer in mntenv

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/shlibs/mount/src/fs.c b/shlibs/mount/src/fs.c
index 61bad7fd79c9f7a0ac9d074044ee8cc79d85aef2..94c35355801816f990f8f9636b091ded9a4eb366 100644 (file)
--- a/shlibs/mount/src/fs.c
+++ b/shlibs/mount/src/fs.c
@@ -1364,6 +1364,11 @@ int mnt_fs_to_mntent(mnt_fs *fs, struct mntent **mnt)
        m->mnt_freq = mnt_fs_get_freq(fs);
        m->mnt_passno = mnt_fs_get_passno(fs);
 
+       if (!m->mnt_fsname) {
+               m->mnt_fsname = strdup("none");
+               if (!m->mnt_fsname)
+                       goto err;
+       }
        *mnt = m;
 
        return 0;