The ornamental design for a moldingsupportadaptor, as shown and described.
FIG. 1 is a front perspective view of a molding support adaptor in accordance with our new design;
FIG. 2 is a front elevational view of the molding support adaptor shown in FIG. 1;
FIG. 3 is a rear elevational view of the molding support adaptor shown in FIG. 1;
FIG. 4 is a left side elevation view of the molding support adaptor shown in FIG. 1, the right side elevation view being a mirror image thereof;
FIG. 5 is a top plan view of the molding support adaptor shown in FIG. 1; and,
FIG. 6 is a bottom plan view of the molding support adaptor shown in FIG. 1.
The molding support adaptor is shown with a symbolic break in its length. The appearance of any portion of the molding support adaptor between the break lines forms no part of the claimed design.