The ornamental design for a massagetool, as shown and described.
FIG. 1 is a front, upper, left perspective view of a massage tool of our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left view thereof;
FIG. 5 is a right view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines formed by equal length dashes (i.e., dash-dash) depict portions of the massage tool that form no part of the claimed design. The broken lines formed by unequal length dashes (i.e., dash-dot) define bounds of the claim and form no part of the claimed design. The massage tool is shown a symbolic break. The appearance of any portion between the broken away symbols forms no part of the claimed design.