I claim the ornamental design for a faucet, as shown and described.
FIG. 1 is a top, front, left perspective view of an embodiment of the claimed design;
FIG. 2 is a bottom, front, left perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a right side elevation view thereof, and the left side elevation view of the claimed design is a mirror image of the right side elevation view;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings form no part of the claimed design. Broken lines formed by equal length dashes show unclaimed subject matter.