The ornamental design for a beerholster, as shown and described.
FIG. 1 is a front, left, and top perspective view of a beer holster, showing my 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 bottom plan view thereof.
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a front, left, and top perspective view of FIG. 1 shown with a beer in the holster.
The broken lines showing of the beer bottle in FIG. 8 is for the purpose of illustrating environmental structure and forms no part of the claimed design. All other broken lines depict portions of the beer holster and form no part of the claimed design.