!125 fix: toybox ls命令查询nfs挂载路径报错问题

Merge pull request !125 from Kiita/0525_mount_3.2

fs/mount/fs_mount.c

@@ -296,7 +296,7 @@ int mount(const char *source, const char *target,
     }
   mnt->vnodeBeCovered->flag |= VNODE_FLAG_MOUNT_ORIGIN;
   mnt->vnodeCovered->flag |= VNODE_FLAG_MOUNT_NEW;
-  mnt->vnodeCovered->filePath = strdup(target);
+  mnt->vnodeCovered->filePath = strdup(mountpt_vnode->filePath);
   mnt->vnodeDev = device;
   mnt->ops = mops;
   if (target && (strlen(target) != 0))