The ornamental design for a fishinglineholder, as shown and described.
FIG. 1 is a top plan view of a fishing line holder showing my new design;
FIG. 2 is a side elevation of the new fishing line holder of my design;
FIG. 3 is a bottom plan view thereof; and
FIG. 4 is a vertical cross section taken on the lines 4--4 of FIG. 1, it
being understood that said cross section shows in greater detail certain
of the aspects of my new design, and in particular, surface contours which
are more clearly apparent in cross section.