Please bump to latest available version
*android-ndk-10e (16 Jun 2015) 16 Jun 2015; Jason Zaman <perfinion@gentoo.org> +android-ndk-10e.ebuild: bump 16 Jun 2015; Jason Zaman <perfinion@gentoo.org> metadata.xml: take over maintainership from jauhien
Looks like this was fixed today.