The ornamental design for a bracer, as shown and described.
FIG. 1 is a perspective view of a bracer;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view of the bracer in use.
The broken lines showing a human arm in FIG. 8 are for the purpose of illustrating environment and form no part of the claim. The broken line showing of a bracer are for the purpose of illustrating portions of the article and form no part of the claim.