We claim the ornamental design for a torso bar, as shown and described.
FIG. 1 is a perspective view of a torso bar on a stool showing a top, a rear and portions of left and right sides.
FIG. 2 is a top plan view of the torso bar.
FIG. 3 is a right side elevational view.
FIG. 4. is a left side elevational view.
FIG. 5 is a front elevational view, the rear being a mirror image thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken line showings of the mounting portion and the surface groove illustrate portions of the torso bar that form no part of the claimed design. The broken line showing of a portion of the stool illustrates the environment of the claimed design and forms no part thereof.