The ornamental design for an itemcounter, as shown and described.
FIG. 1 is a perspective view of an item counter;
FIG. 2 is second perspective view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right-side elevational view thereof; and,
FIG. 8 is a left-side elevational view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. Features shown in broken lines are presented for illustrative purposes and form no part of the claimed design.