I claim the ornamental design for a cabinet door edge guard, as shown and described.
FIG. 1 is a front view of a cabinet door edge guard.
FIG. 2 is a rear view thereof.
FIG. 3 is a right side view thereof.
FIG. 4 is a left side view thereof.
FIG. 5 is a top view thereof.
FIG. 6 is a bottom view thereof.
FIG. 7 is a perspective view thereof; and,
FIG. 8 is a second perspective view thereof shown in use on a cabinet door.
The claim is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.