The ornamental design for a fabricsweeper, as shown and described.
FIG. 1 is a perspective view of a top section of a fabric sweeper showing my new design;
FIG. 2 is a right side elevation view thereof, with the left side being a mirror image of the right side; and,
FIG. 3 is a rear elevation view thereof, with the front being a mirror image of the rear.
The broken lines immediately adjacent to the shaded area represent an unclaimed boundary of the design. The broken lines showing the remainder of the claimed article is for illustrative purposes only and forms no part of the claimed design.