The ornamental design for a puttingcup, as shown and described.
FIG. 1 is a perspective view of a putting cup showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof; and
FIG. 6 is a top view thereof; and,
FIG. 7 is a rear view thereof.
The broken lines shown in FIGS. 1 and 2 are included for the purpose of illustrating elements of the putting cup that form no part of the claimed design.
The stippling represents a surface contrast consonant with the visual appearance shown in the drawings.