If no ARRAY_BUFFER is bound in glVertexAttrib*Pointer, sanitise pointer
If no ARRAY_BUFFER is bound in glVertexAttrib*Pointer, sanitise pointer

* This ensures we don't serialise a pointer to client memory which is non-
  deterministic. The value isn't used, we will readback the actual data at draw
  time and replace with client-memory buffer updates.

TurtleRockStudios/renderdoc_public,TurtleRockStudios/renderdoc_public,googlestadia/renderdoc,googlestadia/renderdoc,TurtleRockStudios/renderdoc_public,baldurk/renderdoc,googlestadia/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,googlestadia/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,googlestadia/renderdoc,googlestadia/renderdoc,TurtleRockStudios/renderdoc_public,TurtleRockStudios/renderdoc_public,TurtleRockStudios/renderdoc_public,baldurk/renderdoc,baldurk/renderdoc