I claim the ornamental design for a corner trim, as shown and described.
FIG. 1 is a left front perspective view of the corner trim shown adjacent door or window casing. The portion shown in stippled lines forms no part of the claimed design;
FIG. 2 is a front elevation view of the corner trim of FIG. 1;
FIG. 3 is a back elevation view of the corner trim of FIG. 1;
FIG. 4 is a left side elevation view of the corner trim of FIG. 1;
FIG. 5 is a right side elevation view of the corner trim of FIG. 1;
FIG. 6 is a top plan view of the corner trim of FIG. 3;
FIG. 7 is a bottom plan view of the corner trim of FIG. 1;
FIG. 8 is a right rear side elevation view of the corner trim of FIGS. 1 and 3 showing the adjacent door or window casing. The portion shown in stippled lines forms no part of the claimed design; and,
FIG. 9 is a rear bottom plan view of the corner trim of FIGS. 1 and 3 shown adjacent door or window casing. The portion shown in stippled lines forms no part of the claimed design.
The broken lines are provided for illustrative purposes only and form no part of the claimed design.