Fix a memory leak when emitting some signals from the registry
Fix a memory leak when emitting some signals from the registry

gloob/gloob-s-at-spi2-core,GNOME/at-spi2-core,gloob/gloob-s-at-spi2-core,GNOME/at-spi2-core,GNOME/at-spi2-core,gloob/gloob-s-at-spi2-core