I claim the ornamental design for a vehicular glare-reducing accessory, as shown and described.
FIG. 1 is a front view of the vehicular glare-reducing accessory.
FIG. 2 is a left side view of the claimed design.
FIG. 3 is a right side view of the claimed design.
FIG. 4 is a top view of the claimed design.
FIG. 5 is a bottom view of the claimed design; and,
FIG. 6 is a perspective view of the claimed design. The visor depicted in broken lines of FIG. 6 is environmental matter, and forms no part of the claimed design.