The ornamental design for a headmodulehousing, as shown and described.
FIG. 1 is a front right side perspective view of a head module housing in accordance with the new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a front isometric view thereof;
FIG. 5 is a rear isometric view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a front right side perspective view thereof, showing the head module housing shown in an environment wherein it is connected to other modular devices.
The broken lines are included for the purpose of illustrating portions of the head module housing that form no part of the claimed design.