The ornamental design for a mezcalbottle, as shown and described.
FIG. 1 is a top perspective view of a mezcal bottle, showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is rear elevation view thereof;
FIG. 4 is a right-side elevation view thereof;
FIG. 5 is a left-side elevation view thereof; and,
FIG. 6 is a top plan view thereof.
The evenly-sized broken lines shown in the drawings depict portions of the mezcal bottle that form no part of the claimed design, while the unevenly-sized dot-dash-dot line defines the bounds of the claimed design and forms no part of the claimed design.