[PATCH] randr: first check pScrPriv before using the pointer at RRFirstOutput

[Keith Packard]

Ricardo Salveti de Araujo <ricardo.salveti at linaro.org> writes:

> Fix a seg fault in case pScrPriv is NULL at ProcRRGetScreenInfo,
> which later calls RRFirstOutput.

Merged, along two more similar cases and some warning cleanups.
   3ef3ce0..855003c  master -> master

-- 
keith.packard at intel.com
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