The ornamental design for a portion of a trimring component of a latch housing, as shown and described.
FIG. 1 is a front top right perspective view of a portion of a trim ring component of a latch housing showing our new design, a front top left perspective view being a mirror image thereof.
FIG. 2 is a back top left perspective view thereof, a back top right perspective view being a mirror image thereof.
FIG. 3 is a front view thereof.
FIG. 4 is a top view thereof.
FIG. 5 is a bottom view thereof.
FIG. 6 is a left side view thereof.
FIG. 7 is a right side view thereof; and,
FIG. 8 is a back view thereof.
The broken lines in the drawings depict a portion of a trim ring component of a latch housing that form no part of the claimed design.