Pacifier

FIG. 1 is a right side view of an ornamental design for a pacifier;

FIG. 2 is a left side view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back perspective view thereof.