The ornamental design for a lid for beveragecontainer, as shown and described.
FIG. 1 is a top perspective view of a lid for beverage container showing the new design;
FIG. 2 is a left view thereof;
FIG. 3 is a right view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines and the areas within adjacent to shaded surfaces in the drawings depict portions of the lid for beverage container that form no part of the claimed design.