Avoiding call to Slo_SetShader if the filename extension is not 'sdl' to prevent seg faults.
Avoiding call to Slo_SetShader if the filename extension is not 'sdl' to prevent seg faults.

AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,Alwnikrotikz/cortex-vfx,tectronics/cortex-vfx,Alwnikrotikz/cortex-vfx,AlanZatarain/cortex-vfx,AlanZatarain/cortex-vfx,tectronics/cortex-vfx,tectronics/cortex-vfx