The ornamental design for a cargocover, as shown and described.
FIG. 1 is a front, first side, top perspective view of a cargo cover according to my design;
FIG. 2 is a top side view thereof;
FIG. 3 is a bottom side view thereof;
FIG. 4 is a front side view thereof;
FIG. 5 is a back side view thereof;
FIG. 6 is a first side view thereof;
FIG. 7 is a second side view thereof; and,
FIG. 8 is a perspective view thereof showing the cargo cover attached to a Jeep-like utility vehicle.
The broken line portions of the figure drawings are included to show unclaimed subject matter only for the purpose of illustrating environment and forms no part of the claimed design.