The ornamental design for a firepit, as shown and described.
FIG. 1 is an upper perspective view of a fire pit showing my new design.
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is an opposite side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a lower perspective view thereof.
The features presented in broken lines represent unclaimed portions of the fire pit, including unclaimed wire mesh, and form no part of the claimed design.