The ornamental design for a necktie, as shown and described.
FIG. 1 is a front perspective view showing my new design;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevational view thereof; and,
FIG. 5 is a bottom plan view thereof.
The short curved lines shown intermittently on the surfaces of the claimed design indicate fabric. The short dash frequency lines illustrate stitching, which is part of the claimed design. The long-dash-short-dash-dash-long frequency lines depict those parts of the article in which the design is embodied that form no part of the claim.