Fixes a minor memory leak caused by a self-referential data structure with a __del__() method by explicitly breaking the cycle. Change-Id: Ic2c896d3067f8a2205abc8a43ec290fdbd92ef09
Fixes a minor memory leak caused by a self-referential data structure with a __del__() method by explicitly breaking the cycle. Change-Id: Ic2c896d3067f8a2205abc8a43ec290fdbd92ef09