The ornamental design for an angleadjuster for antenna-fixing bracket, as shown and described.
FIG. 1 is a front, right side, bottom perspective view of an angle adjuster for antenna-fixing bracket showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a reference rear elevational view thereof, showing a state in which this article is attached to an angle adjuster part of an antenna-fixing bracket.
The broken lines showing environmental subject matter form no part of the claimed design.