The ornamental design for a fishingreel handle, as shown and described.
FIG. 1 is a front elevation view thereof;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is bottom plan view thereof; and,
FIG. 6 is rear elevation view thereof.
The broken lines in FIGS. 1-6 are for the purpose of illustrating the environment in which the design is associated and form no part of the claimed design.