The ornamental design for a toecap for a shoe, as shown and described.
FIG. 1 is a top, front left perspective view of a toe cap for a shoe showing our new design; and,
FIG. 2 is a top, front left perspective view of the toe cap for a shoe, showing the toe cap for a shoe in an example use condition.
The figures include broken, solid and dash-dot-dash lines. The areas within the solid lines and inside the dash-dot-dash lines form the claimed design. The dash-dot-dash lines illustrate an unclaimed boundary of the claimed design. The broken lines shown in the figures are included for the purpose of illustrating portions of the toe cap for a shoe and form no part of the claimed design. The broken lines showing a shoe in FIG. 2 are for the purposes of illustrating environment and form no part of the claimed design.