The ornamental design for a decorativedoor closer body, as shown and described.
FIG. 1 is a upper-right front perspective view of the decorative door closer body.
FIG. 2 is a lower-left front perspective view of the decorative door closer body.
FIG. 3 is a front view of the decorative door closer body.
FIG. 4 is a top view of the decorative door closer body.
FIG. 5 is a enlarged right side view of the decorative door closer body.
FIG. 6 is a enlarged left side view of the decorative door closer body; and,
FIG. 7 is a bottom view of the decorative door closer body.
The broken lines are for the purpose of showing exemplary hardware and exemplary openings/apertures associated with the decorative door closer body, and they form no part of the claimed design.