The ornamental design for a lighter casing, as shown and described.
FIG. 1 is a front view of the lighter casing presenting a representation of
the Statute of Liberty having its torch aligned with a flame source of the
lighter;
FIGS. 2 and 3 show front and rear views respectively of FIG. 1; and,
FIGS. 4 and 5 are top and bottom views respectively of FIG. 1.
The opposite side of the housing is a mirror image of FIG. 1. The broken
lines are shown for illustrative purposes only.