I claim the ornamental design for a liquid container, as shown and described.
FIG. 1 is a front elevation view of a liquid container showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a partial enlarged view according to the broken circle indicated by “5” in FIG. 2; and,
FIG. 6 is a front elevation view thereof showing the liquid container with the band element removed.
The broken line showing in FIGS. 2 and 5 represents boundaries around portions of the claim that have been enlarged for clarity and form no part of the claim.