The ornamental design for a cabin for a transportvehicle, as shown and described.
FIG. 1 is a right front perspective view of our cabin for a transport vehicle;
FIG. 2 is an enlarged right side view thereof;
FIG. 3 is an enlarged left side view thereof;
FIG. 4 is an enlarged front view thereof;
FIG. 5 is an enlarged rear view thereof; and,
FIG. 6 is a top plan view thereof.
The portion of the photographs in FIGS. 1–6 shown in a coarse dot pattern and outlined in dashed lines is included for the purpose of illustrating portions of the cabin for a transport vehicle and forms no part of the claimed design.