[ANDROID] Fix POST_BUILD variable scope bug
[ANDROID] Fix POST_BUILD variable scope bug

It’s mostly triggered with some older versions of the Android NDK

Signed-off-by: Anestis Bechtsoudis <7611fa5e9fd33f993ed88a8464a47644a6f066ca@census-labs.com>

anestisb/honggfuzz,google/honggfuzz,google/honggfuzz,google/honggfuzz