The ornamental design for a bagdispenser, as shown and described.
FIG. 1 is a perspective view taken from a top, front, right side of a bag dispenser, according to our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The design consists of the visual features of the portions of the bag dispenser shown in solid lines in the drawings. Throughout the figures, where shown the dotted lines-showing additional structure of the bag dispenser are for illustrative purposes only and form no part of the claimed design.