The ornamental design for a T-handle for a lintbrush, as shown and described.
FIG. 1 is a perspective view of a T-handle for a lint brush;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawings show structure and/or boundaries that are not part of the claimed design, but rather show the environment in which the design is associated, or show portions of the article in which the design is embodied or applied to that are not considered part of the claimed design.