The ornamental design for a tablepedestal, as shown and described.
FIG. 1 is a top, front and left side perspective view of a table pedestal showing the new design, with broken lines indicating environmental structure that is not part o the new design.
FIG. 2 is a back elevational view of a table pedestal showing the new design, with broken lines indicating environmental structure that is not part o the new design. The front, left and right side elevational views are mirror images of the back elevational view; and,
FIG. 3 is a top view of a table pedestal showing the new design, with broken lines indicating environmental structure that is not part o the new design.