Fix zero address transfer bug#151
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andrew-fleming merged 3 commits intoOpenZeppelin:mainfrom Jan 21, 2022
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martriay
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Jan 21, 2022
| let (caller) = get_caller_address() | ||
| let (is_approved) = _is_approved_or_owner(caller, token_id) | ||
| assert is_approved = 1 | ||
| assert_not_zero(caller * is_approved) |
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Fixes #148.