The ornamental design for a wallhanginglevel brace, as shown and described.
FIG. 1 is a front elevational view of my design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left rear perspective view thereof;
FIG. 4 is a right front perspective view thereof;
FIG. 5 is a left side elevational view thereof used in connection with a wall hanging;
FIG. 6 is a rear elevational view thereof shown in use with a wall hanging and a second brace, the wall hanging and second brace being shown in broken lines and forming no part of the claimed design; and,