The ornamental design for a watercloset, as shown and described.
FIG. 1 is a top, right, front, perspective view of a water closet showing our new design;
FIG. 2 is a top, right, rear, perspective view thereof;
FIG. 3 is a top, left, rear, perspective view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a right side view thereof;
FIG. 8 is a top view thereof, and,
FIG. 9 is a bottom view thereof.
The broken lines shown in the figures are included for the purpose of illustrating portions of the water closet that form no part of the claimed design.
The dash-dot-dash broken lines shown in the figures represent an unclaimed boundary between claimed and unclaimed subject matter.