The ornamental design for a chiller, as shown and described.
FIG. 1 is a perspective view of a chiller in full lines with a bottle shown in broken lines representing environmental association matter being for illustrative purposes only and forming no part of the claimed invention.
FIG. 2 is a front elevational view of the chiller, the rear elevational view being a mirror image of the front view.
FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image of the left side view.
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE ADDRESS INCOMPLETE PREVIOUSLY RECORDED ON REEL 019539 FRAME 0143 ASSIGNOR S HEREBY CONFIRMS THE ASSIGNEE ADDRESS INCOMPLETE