Allocate context attributes only if got pointer to glXCreateContextAttribsARB
Allocate context attributes only if got pointer to glXCreateContextAttribsARB

Hotspotmar/ouzel,elvman/ouzel,Hotspotmar/ouzel,elnormous/ouzel,Hotspotmar/ouzel,elnormous/ouzel,elnormous/ouzel,elvman/ouzel