8132875: AArch64: Fix error introduced into AArch64 CodeCache by commit for 8130309 Summary: The fix for issue 8130309 introduced several errors into the AArch64 codecache routines Reviewed-by: aph, thartmann, kvn

^build/
^dist/
^webrev
^testoutput/
/nbproject/private/
^make/netbeans/.*/build/
^make/netbeans/.*/dist/
^.hgtip
.DS_Store