The ornamental design for a domino-mahjong style connector, as shown and described.
FIG. 1 is a top, right side perspective view of a domino-mahjong style connector showing our new design, the top, left side perspective view thereof is a mirror image thereto;
FIG. 2 is a bottom, right side perspective view thereof, the bottom, left side perspective view thereof is a mirror image thereto;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is a right side elevation view thereof; and,
FIG. 8 is a left side elevation view thereof.
The broken line portion of the figure drawings is included to show unclaimed subject matter only and forms no part of the claimed design.