Fix Condition::waitRelative.

HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE has never been defined for LP64,
so let's have everyone use the same code path.

Also fix the possible overflow.

Bug: http://b/26944282
Bug: http://b/27918161
Change-Id: I51fc0ebb1f6b860dc62d721f8ebfbcf724ce66e7
1 file changed