The ornamental design for a bollardwall brace, as shown and described.
FIG. 1 is a front perspective view of a bollard wall brace in accordance with the design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a rear perspective view thereof; and,
FIG. 9 is a perspective view showing the bollard wall brace in an example environment.
The broken lines shown in FIGS. 1-9 illustrate portions of the bollard wall brace that form no part of the claimed design. The additional broken lines shown in FIG. 9 illustrates environment and forms no part of the claimed design.