We claim an ornamental design for an electronic device, substantially as shown and described.
FIG. 1 is a front perspective view for the device.
FIG. 2 is a right perspective side view for the device.
FIG. 3 is a left perspective side view for the device.
FIG. 4 is a right view for the device.
FIG. 5 is a left view for the device.
FIG. 6 is a bottom view for the device; and,
FIG. 7 is a top view for the device.
The broken lines represent the bounds of the claim and form no part of the claim.
The article is not limited to the scale shown herein. As indicated in the tile, the article of manufacture to which the ornamental design has been applied is an electronic device.