The ornamental design for a outdoorlightingfixture, as shown and described.
FIG. 1 is a perspective view of an outdoor lighting fixture showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left plan view thereof;
FIG. 5 is a right plan view thereof;
FIG. 6 is a bottom elevational view thereof; and,
FIG. 7 is a top view thereof.
The thin, broken lines in the drawings depict the shape and contours of the surfaces. All surfaces of the outdoor lighting fixture are included in the claim.