Make xf86CompatOutput() return NULL when there are no privates
Some drivers (mach64 w/o DRI for instance) don't initialize privates.
Signed-off-by: Matthieu Herrb matthieu.herrb@laas.fr
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Some drivers (mach64 w/o DRI for instance) don't initialize privates.
Signed-off-by: Matthieu Herrb matthieu.herrb@laas.fr