The ornamental design for a garbage can, as shown and described.
FIG. 1 is a top-front-right side perspective view of a garbage can showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is an enlarged view of the portion 8 of FIG. 1; and,
FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 2.
The broken lines in the drawings depict portions of the garbage can that form no part of the claimed design. The broken line circles shown in FIGS. 1 and 8 depict enlarged views that form no part of the claimed design.