dri3: Fix XACE access mode for open and get_supported_modifiers
Neither opening a screen nor querying its modifiers confers the right to attach the buffer for any particular pixmap. GetAttr seems more correct.
Fixes: #550 (closed)
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Neither opening a screen nor querying its modifiers confers the right to attach the buffer for any particular pixmap. GetAttr seems more correct.
Fixes: #550 (closed)