[PATCH] twain_32: Fix crash by call TWAIN_UserSelect twice.

[Jactry Zeng]

On 6/1/21 10:27 PM, Jactry Zeng wrote:
> On 6/1/21 9:22 PM, Jiajin Cui wrote:
>>  
>>      twain_autodetect();
>>  
>> +    if (!IsWindow(parent))
>> +        parent = *(HWND*)DSM_parent;
>> +
> If this is true, you would need to remove the following check.
Sorry, please ignore this comment.
> And I think attaching some tests to verify it won't hurt.
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