I claim the ornamental design for a furniture leg, as shown and described.
FIG. 1 is a front perspective view of a furniture leg showing my new design in an example environment of use.
FIG. 2 is a front perspective view of a furniture leg shown separately to show aspects of the design that may not be apparent in other views.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a right-side elevational view thereof.
FIG. 5 is a left-side elevational view thereof.
FIG. 6 is a rear view thereof; and,
FIG. 7 is a top plan view thereof.
The evenly dashed broken lines in FIGS. 1-7 depict an example and portions of the furniture leg that form no part of the claimed design. The unevenly dashed broken lines depict the boundaries of the claim and form no part of the claimed design.