The ornamental design for a storagecontainer, as shown and described.
FIG. 1 is a perspective view of a storage container showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a second perspective view showing a storage container, the container shown in an open configuration; and,
FIG. 9 is a top view thereof.
The dash-dash-dash broken lines in the Figures are for the purpose of illustrating unclaimed portions of the storage container and form no part of the claimed design. The dash-dot-dash broken lines represent boundary lines. The shade lines in the Figures show contour and not surface ornamentation.