The ornamental design for a hairstyler, as shown and described.
FIG. 1 is a perspective view of a first version of the invention, shown in an open position;
FIG. 2 is another perspective view of the invention of FIG. 1, shown in an open position;
FIG. 3 is a top plan view of the invention of FIG. 1, shown in an open position;
FIG. 4 is a bottom plan view of the invention of FIG. 1, shown in an open position;
FIG. 5 is a side elevation view of the invention of FIG. 1, shown in an open position, the unshown opposite side elevation being a mirror image thereof;
FIG. 6 is a rear elevation view of the invention of FIG. 1, shown in an open position;
FIG. 7 is a front elevation view of the invention of FIG. 1, shown in an open position; and,
FIG. 8 is perspective view of the first version of the invention, shown in a closed position.
All portions of the drawings shown in dashed or broken lines are for illustrating portions of the article that form no part of the claim.