am 0b96565a: Fix typo which prevented APP_CFLAGS, APP_CXXFLAGS and others to work properly in the NDK build system.

Merge commit '0b96565afea3f1b1a6e4585a75c9bd6c2ea74a63'

* commit '0b96565afea3f1b1a6e4585a75c9bd6c2ea74a63':
  Fix typo which prevented APP_CFLAGS, APP_CXXFLAGS and others to work properly in the NDK build system.