Only query a relation set if it is non-NULL
Only query a relation set if it is non-NULL

Distrotech/at-spi2-atk,GNOME/at-spi2-core,GNOME/at-spi2-core,Distrotech/at-spi2-atk,GNOME/at-spi2-atk,GNOME/at-spi2-core