We claim the ornamental design for an ice maker for refrigerator, as shown and described.
FIG. 1 is a perspective view of an ice maker for refrigerator showing the 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 another perspective view showing a state of use thereof.
The parts shown by means of broken lines in the drawing figures represent portions of the ice maker for refrigerator and form no part of the claimed design.