The ornamental design for a fastener for pacifier, as shown and described.
FIG. 1 is a bottom front left perspective view of a fastener for pacifier, showing my new design in an environment of use with a pacifier and a toy;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is left side elevational view thereof;
FIG. 6 is another bottom front left perspective view thereof;
FIG. 7 is a bottom front left perspective view of the fastener for pacifier of FIG. 1, shown separated from the pacifier and toy for clarity of disclosure;
FIG. 8 is a top plan view thereof; and,
FIG. 9 is a bottom front left perspective view thereof, shown in an open configuration for clarity of disclosure.
In FIGS. 1-6, broken lines showing the pacifier and the toy form no part of the claimed design.