Don't keep setting the width and height after the first initialization. Fixes a crash with VP6 streams that don't begin with a keyframe and shouldn't matter for anything else.
Don't keep setting the width and height after the first initialization. Fixes a crash with VP6 streams that don't begin with a keyframe and shouldn't matter for anything else.

MaddTheSane/perian,JanX2/Perian,MaddTheSane/perian,JanX2/Perian,MaddTheSane/perian,MaddTheSane/perian,MaddTheSane/perian,JanX2/Perian,MaddTheSane/perian,JanX2/Perian,JanX2/Perian