Fix building libffi on OABI. Although it has been marked as 4.3-only, it is stil not fixed, and also applies to 4.4.x See: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42289 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
