Fix _STLP_USE_EXCEPTIONS

See 814dc3187578d2aa718d9d218707239ec6ddf18e
013fff3524b2798e9d45aefcc13236021da234db
ac2a8a648f99d118c8b8183a6cebefd3c596d197

Change-Id: I47fc735a7a621c1c3cde85f488f7f71532f8d4d0