Fix NetworkInterface.getNetworkInterfaces /proc/net/if_inet6 parsing.

It turns out that some devices can have very large interface indexes,
and my code was incorrectly assuming they'd always fit in 8 bits.

Bug: http://code.google.com/p/android/issues/detail?id=34022
Change-Id: I388a46ffe45f9706a4e28fb3b2975c991a74d419
1 file changed