No custom drawer for RayCastHit

[Former user]

Editor displays a warning on public RayCastHit variable:

Variable definition:

public RaycastHit hit;

Usage:

Ray rayCast = new Ray(holder.transform.position, holder.transform.forward);

bHit = Physics.Raycast(rayCast, out hit, pointerLength);

Unity version 5.6.3p3 Windows 10