I claim the ornamental design for a furniture support, as shown and described.
FIG. 1 is a perspective view of a furniture base showing my new design, in accordance with the present invention;
FIG. 2 is a rear elevational view thereof;
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 top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The furniture shown in broken lines attached to the furniture base in FIG. 1 is shown for environmental use purposes only, and forms no part of the claimed design. The furniture attachment of the legs, the foot rest ring and supports, and the floor support of the furniture base are illustrated in broken line for illustrator purposes only, and as such, form no part of the claimed design.