Don't set SourceValidate pointer to NULL
inspired from similar code in amdgpu, fixes a crash when xrandr(1) is invoqued with X server 21.1.1
Signed-off-by: Matthieu Herrb matthieu.herrb@laas.fr
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inspired from similar code in amdgpu, fixes a crash when xrandr(1) is invoqued with X server 21.1.1
Signed-off-by: Matthieu Herrb matthieu.herrb@laas.fr