The ornamental design for a compactdischolder, as described and shown.
FIG. 1 is a front perspective view of compact disc holder showing my new design, the rear perspective view being identical thereto;
FIG. 2 is a front elevation view thereof, the rear elevation view being identical thereto;
FIG. 3 is a top view thereof, the bottom being identical thereto; and,
FIG. 4 is a right side elevation view thereof, the left side elevation view being identical thereto.
The broken line showing the placement of compact discs in FIG. 1 show the exemplary relationship between the present invention compact disc holder and compact discs and are for illustrative purposes only and form no part of the claimed invention.