The ornamental design for a pitcher, as shown and described.
FIG. 1 is a front, right perspective view of the pitcher showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing on the pitcher in the figures is for the purpose of illustrating portions of the pitcher that form no part of the claimed design; the broken line showing of the lid in the figures is for the purpose of illustrating environment that forms no part of the claimed design; and the dash-dot-dash line defines a boundary of the claimed design and forms no part thereof.