odin export fails, because it runs "rmdir /tmp/odin-flashable-tar" and the folder is not empty

Created by: ollieparanoid

Reported by tikh_av89 on IRC:

(005606) [12:05:37] (rootfs_samsung-lt013g) % rmdir /tmp/odin-flashable-tar 
rmdir: '/tmp/odin-flashable-tar': Directory not empty

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