The ornamental design for a vendingmachine, as shown and described.
FIG. 1 is a perspective view of the vending machine showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in the figures form no part of the claimed design and the shade lines in the figures show contour and not surface ornamentation.