The ornamental design for a wedgegussetpanel for pillow, as shown and described.
FIG. 1 is a perspective view of an example of a pillow having a wedge gusset panel, embodying my new design;
FIG. 2 is a top view of the example of the pillow;
FIG. 3 is a side view of the example of the pillow showing the wedge gusset panel of FIG. 1, shown from the left-hand side of FIG. 1, the right-hand side being a mirror image thereof;
FIG. 4 is front view of the example of the pillow showing the wedge gusset panel of FIG. 1, the rear view being a mirror image thereof; and,
FIG. 5 is a perspective view of another example of a pillow having a wedge gusset panel, embodying my new design.
The broken lines shown in the drawings are included for the purpose of illustrating environmental structure and form no part of the claimed design.