The ornamental design for a bubble-level clip, as shown and described.
FIG. 1 is a front perspective view of a bubble-level clip showing my new design including a bubble-level vial shown in broken lines;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right elevation view thereof;
FIG. 5 is a left elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines representing a bubble-level vial shown in some of the views are for illustrative purposes only and form no part of the claimed design.