The ornamental design for the spout for a container, as shown and described.
FIG. 1 is a perspective view of a spout for a container showing my new design;
FIG. 2 is top view thereof;
FIG. 3 is a side view thereof;
FIG. 4 is another side view thereof;
FIG. 5 is another side view thereof;
FIG. 6 is another side view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is another perspective view thereof.
In the drawings, the broken lines are shown for the purpose of illustrating parts of the article that form no part of the claim. The SPILL-NO-MORE® logo shown in the drawings, and forming no part of the claim, is a registered trademark of B.R. Tenant, Inc.