We claim the ornamental design for a sprinkler, as shown and described.
FIG. 1 is a top right perspective view of a sprinkler, according to the claimed design;
FIG. 2 is a bottom left perspective view of the claimed;
FIG. 3 is a front view of the claimed design;
FIG. 4 is a rear view of the claimed design;
FIG. 5 is a right side view of the claimed design;
FIG. 6 is a left side view of the claimed design;
FIG. 7 is a top view of the claimed design;
FIG. 8 is a bottom view of the claimed design; and,
FIG. 9 is a top right perspective view of the claimed design in an alternative deployed position relative to a position of the claimed design illustrated in FIG. 1.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. Broken lines formed of unequal length dashes (i.e., dash dot) show boundaries between claimed and unclaimed portions of the design.