The ornamental design for a placesaver for stadiumseating, as shown and described.
FIG. 1 is a front elevational view of a place saver for stadium seating, showing my new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a bottom plan view thereof.
The broken line showing in FIGS. 1, 3 and 4 of a stadium seatback is for illustrative and placement purposes only and forms no part of the claimed design.