Update memcached to 1.4.22

library/memcached

@@ -1,6 +1,6 @@
 # maintainer: InfoSiftr <[email protected]> (@infosiftr)
 
-1.4.21: git://github.com/docker-library/memcached@2abd5c1e975313238af4291264902812a04a1815
-1.4: git://github.com/docker-library/memcached@2abd5c1e975313238af4291264902812a04a1815
-1: git://github.com/docker-library/memcached@2abd5c1e975313238af4291264902812a04a1815
-latest: git://github.com/docker-library/memcached@2abd5c1e975313238af4291264902812a04a1815
+1.4.22: git://github.com/docker-library/memcached@5fb6459a1eb138dcd9cfcd5fa1aef62ee511d335
+1.4: git://github.com/docker-library/memcached@5fb6459a1eb138dcd9cfcd5fa1aef62ee511d335
+1: git://github.com/docker-library/memcached@5fb6459a1eb138dcd9cfcd5fa1aef62ee511d335
+latest: git://github.com/docker-library/memcached@5fb6459a1eb138dcd9cfcd5fa1aef62ee511d335