Fix bug 52396. Don't compile case ENOSR on platforms that don't have it.
Fix bug 52396. Don't compile case ENOSR on platforms that don't have it.

ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss