The ornamental design for a cinch, as shown and described.
FIG. 1 is a front perspective view of a cinch showing our new design;
FIG. 2 is a rear upper perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a top view thereof;
FIG. 5 first side view thereof;
FIG. 6 is a second side view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a bottom view thereof; and,
FIG. 9 is a perspective view of a cinch according to an embodiment of the disclosure disposed on the body of a receptacle.
The broken lines in the figures are for the purpose of illustrating portions of the cinch that form no part of the claimed design. The container shown in broken lines in FIG. 9 is to shown environment and form no part of the claimed design.