The ornamental design for a scaffolding, as shown and described.
FIG. 1 is a perspective view of a scaffolding showing my new design;
FIG. 2 is a side elevational view thereof, the side opposite being a mirror
image of the side shown in FIG. 2;
FIG. 3 is an end elevational view thereof; and,
FIG. 4 is a top plan view thereof, it being noted that the bottom view of
the cross ramp elements is identical in surface decoration to that shown
in FIG. 4; and,