The ornamental design for a pitcher, as shown and described.
FIG. 1 is a front three-quarter perspective view of a pitcher design, showing our new design.
FIG. 2 is a side elevation view thereof, the opposite side being a mirror image.
FIG. 3 is a top plan view thereof.
FIG. 4 is a top plan view thereof, in an alternate use condition.
FIG. 5 is a front elevation view thereof.
FIG. 6 is a back elevation view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawing views represent unclaimed portions of a pitcher, which are included for the purpose of illustrating unclaimed environment only, and forms no part of the claimed design.