The ornamental design for a beveragedispenser, as shown and described.
FIG. 1 is a front view of a beverage dispenser of the present invention showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a side view thereof, the opposite side being a mirror image thereof;
FIG. 4 is a top view thereof; and,
FIG. 5 is a perspective view thereof.
The bottom of the design is flat and devoid of surface ornamentation and therefore not represented. The broken line portion of the figure drawings is included to show portions of the article that form no part of the claimed design.