The ornamental design for a vegetableprocessor, as shown and described.
FIG. 1 is a perspective view of a vegetable processor according to our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines illustrating portions of the vegetable processor and/or environmental structures of the vegetable processor form no part of the claimed design.