The ornamental design for a granuledispenser, as shown and described.
FIG. 1 is a front perspective view of a granule dispenser, showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a side view thereof;
FIG. 5 is a side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines represent unclaimed boundaries of the design. The vertical shading lines are for illustrative purposes only and form no part of the claimed design.