The ornamental design for a connector of mold, as shown and described.
FIG. 1 is a perspective view of a connector of mold showing my new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a rear view thereof; and,
FIG. 8 is a perspective view thereof showing the connector in use condition mounted on a mold.
The broken line showing of a mold and the extra connectors is included for the purpose of illustrating environmental structure only and forms no part of the claimed design.