We claim the ornamental design for a wine refrigerator, as shown and described.
FIG. 1 is a perspective view of a wine refrigerator showing our new design:
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left-side elevation view thereof;
FIG. 5 is a right-side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view with its door opened.
The even broken lines represent an unclaimed line on the surface and form no part of the claimed design. The dash-dot-dash broken lines illustrate environmental structure and form no part of the claimed design.