The ornamental design for a footstand for walkingstick, as shown and described.
FIG. 1 is an upper perspective view of a foot stand for walking stick showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof, the center circle depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design;
FIG. 7 is a bottom plan view thereof, the center triangle depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design;
FIG. 8 is an upper perspective view thereof, the walking stick depicted by means of broken lines being for illustrative purposes only; and,
FIG. 9 is an upper perspective view thereof, the walking stick depicted by means of broken lines being for illustrative purposes only.