The ornamental design for a housing for a cablelock, as shown and described.
FIG. 1 is a front right perspective view of a housing for a cable lock showing my new design;
FIG. 2 is a rear bottom perspective view thereof;
FIG. 3 is a front left perspective view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a right side view thereof; and,
FIG. 9 is a left side view thereof.
The broken lines immediately adjacent to the shaded area define the bounds of the claimed design and form no part thereof. The unshaded regions within the shaded area that are demarcated by broken lines form no part of the claimed design.