The ornamental design for a winebottlecover, as shown and described.
FIG. 1 is a perspective view of a wine bottle cover showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is another perspective view thereof; and,
FIG. 9 is a rear view thereof with a wine bottle mounted in the wine bottle cover.
The portions of the Figures shown in broken lines depict environmental subject matter, are for illustration only and form no part of the claimed design.