The ornamental design for a footwear, as shown and described.
FIG. 1 is front perspective view of footwear in accordance with the present invention;
FIG. 2 is a side view thereof;
FIG. 3 is another side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front view thereof; and,
FIG. 7 is a rear view thereof.
The dashed lines on the footwear upper represent claimed stitching. All other broken lines illustrate environmental structure and form no part of the claimed design.