The ornamental design for a mirror, as shown and described.
FIG. 1 is a perspective view of a top, front, and right side of an ornamental design for a mirror in a first configuration;
FIG. 2 is a front elevational view of the mirror of FIG. 1;
FIG. 3 is a rear elevational view of the mirror of FIG. 1;
FIG. 4 is a right side elevational view of the mirror of FIG. 1;
FIG. 5 is a left side elevational view of the mirror of FIG. 1;
FIG. 6 is a top plan view of the mirror of FIG. 1;
FIG. 7 is a bottom plan view of the mirror of FIG. 1; and,
FIG. 8 is a perspective view of a top, front, and right side of the mirror of FIG. 1 in a second configuration.
The broken lines in the figures are for the purpose of illustrating portions of the mirror, which form no part of the claimed design. The mirror is shown with a symbolic dash-dot break lines in its length. The appearance of any portion of the mirror between the dash-dot break lines, shown in dash-dash broken lines form no part of the claimed design. The oblique shade lines depict a reflective surface.