The ornamental design for a cap for an electronicvaporizer, as shown and described.
FIG. 1 is a perspective, right side view of a cap for an electronic vaporizer, showing my new design.
FIG. 2 is a perspective, right side view of the cap for an electronic vaporizer of FIG. 1 in a closed position and attached to an electronic vaporizer.
FIG. 3 is a front elevation view of the cap for an electronic vaporizer of FIG. 1.
FIG. 4 is a rear elevation view thereof.
FIG. 5 is a left side view thereof.
FIG. 6 is a right side view thereof.
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines showing in FIG. 2 of an electronic vaporizer depict environmental subject matter and form no part of the claimed design.