fix nil map assignment in gc handler (#14918)
fix nil map assignment in gc handler (#14918)

Signed-off-by: Eike David Lenz <87ff389b17b366b6e22fcd92adc3fb54ee6aa735@mittwald.de>
reasonerjt/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,wy65701436/harbor,wy65701436/harbor,reasonerjt/harbor,wy65701436/harbor,wy65701436/harbor