The ornamental design for a cradle, as shown and described.
FIG. 1 is a front, top and left side perspective view of a cradle showing our new design;
FIG. 2 is a rear, top and right side perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is an enlarged view of portion 8 in FIG. 1;
FIG. 9 is a front, top, left side perspective view showing the cradle in a first use that with one side of the cradle removed for clarity of illustration;
FIG. 10 is a front, top, left side perspective view showing the cradle in a second use state with one side of the cradle removed for clarity of illustration; and,
FIG. 11 is a front, top and left side perspective view showing the cradle in a third use state.
The broken lines in the drawings illustrate portions of the cradle which form no part of the claimed design.
No bottom plan view is provided since the bottom is unornamented and forms no part of the claimed design.