lib/gibber/gibber-namespaces.h: Fix double #define from the merge
lib/gibber/gibber-namespaces.h: Fix double #define from the merge

freedesktop-unofficial-mirror/telepathy__telepathy-salut,freedesktop-unofficial-mirror/telepathy__telepathy-salut,freedesktop-unofficial-mirror/telepathy__telepathy-salut,freedesktop-unofficial-mirror/telepathy__telepathy-salut