FIG. 1 is a top, left perspective view of a post support showing my new design; FIG. 2 is a bottom, right perspective view thereof; FIG. 3 is a bottom plan view thereof; FIG. 4 is a front view thereof, a rear view being a mirror image of the front view; FIG. 5 is a top plan view thereof; FIG. 6 is a right end view thereof; and, FIG. 7 is a left end view thereof.