The ornamental design for a garland light set section, as shown and described.
FIG. 1 is an isometric view from one side of a first embodiment of a garland light set section showing my new design; and,
FIG. 2 is a view similar to FIG. 1, but of a second embodiment thereof.
All sides of each embodiment are essentially the same.
In all views the broken lines which define the bounds of the claimed design form no part thereof, and the broken lines which indicate indeterminate length within the bounds of the claimed design form no part thereof.