x86: Fix some unwind errors
x86: Fix some unwind errors

joshtriplett/libffi,plicease/libffi,bgarrels/libffi,Pan7/libffi,biosbits/libffi,Pan7/libffi,Distrotech/libffi,rth7680/libffi,s1341/libffi,joshtriplett/libffi,rth7680/libffi,nmav/libffi,nmav/libffi,biosbits/libffi,bgarrels/libffi,Distrotech/libffi,joshtriplett/libffi,biosbits/libffi,joshtriplett/libffi,rth7680/libffi,s1341/libffi,Distrotech/libffi,plicease/libffi,rth7680/libffi,s1341/libffi,nmav/libffi,plicease/libffi,biosbits/libffi,Distrotech/libffi,nmav/libffi,plicease/libffi,Pan7/libffi,s1341/libffi,bgarrels/libffi,bgarrels/libffi,Pan7/libffi