[PATCH v4 0/1] MR2262: winspool: Check dmSize in IsValidDevmodeW

[Tingzhong Luo (＠tzluo)]

When dmSize is zero or greter than size of input buffer, `IsValidDevmodeW()`
 failed in Windows 10. 

But current implementation in wine, it will return `true` because
there is no check to `dm.dmSize`.

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  v4: winspool: Check dmSize in IsValidDevmodeW
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/2262