The ornamental design for a foildispenser, as shown and described.
FIG. 1 is a ¾ perspective view of a foil dispenser showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing in the Figures is included for the purposes of illustrating portions of the foil dispenser and form no part of the claimed design.