wgl: Initialize DEVMODE struct
Otherwise the dmDriverExtra field might be uninitialized and have a nonzero value, which can cause the API implementation to smash the stack when copying to the output struct.
Cc: mesa-stable
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Otherwise the dmDriverExtra field might be uninitialized and have a nonzero value, which can cause the API implementation to smash the stack when copying to the output struct.
Cc: mesa-stable