The ornamental design for a pottingcup as shown and described.
FIG. 1 is a top perspective view of a potting cup showing my design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a first side view thereof;
FIG. 4 is second side view thereof, opposite that shown in FIG. 3;
FIG. 5 is another side view thereof, 90 degrees offset from that shown in FIG. 3;
FIG. 6 is another side view thereof, opposite that shown in FIG. 5;
FIG. 7 is a top view of the potting cup;
FIG. 8 is a bottom view thereof; and,
FIG. 9 is top perspective view illustrating the potting cup of FIG. 1 positioned on a printed circuit board to show the article in a use configuration.
The broken lines shown in FIG. 9 depict environment that forms no part of the claimed design.