The ornamental design for a fishinglineholder, as shown and described.
FIG. 1 is an elevational view of one side of the fishing line holder design
of the present invention, a side elevational view of the opposite side
would be a mirror image to that shown in FIG. 1. For illustrative
purposes, a fishing line is shown in phantom view in FIG. 1.
FIG. 2 is an elevational view of one end of the design of FIG. 1.
FIG. 3 is an elevational view of the other end of the design of FIG. 1.