The ornamental design for “computer lock”, as shown and described.
FIG. 1 is a perspective view of “computer lock” showing our new design thereof;
FIG. 2 is a right side elevational view;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front side elevational view;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view;
FIG. 7 is a rear side elevational view; and,
FIG. 8 is an additional perspective view thereof, with the broken line disclosure of a portion of a cable being for illustrative purposes only and forming no part of the claimed design.