The ornamental design for a toolcase, as shown and described.
FIG. 1 is a front perspective view of the tool case of the present invention showing my new design;
FIG. 2 is a front side elevational view thereof;
FIG. 3 is a back side elevational view thereof;
FIG. 4 is a side elevational view thereof;
FIG. 5 is another side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line rectangle in FIG. 3 represents the bounds of the claim. The remaining broken lines illustrate portions of the article. None of the broken lines forms part of the claimed design.