xenstore: Fix all builds

xenstore: Fix all builds

This diff is easier viewed through `cat -A`

  diff --git a/tools/xenstore/include/xenstore_state.h b/tools/xenstore/include/xenstore_state.h$
  index 1bd443f61a..f7e4da2b2c 100644$
  --- a/tools/xenstore/include/xenstore_state.h$
  +++ b/tools/xenstore/include/xenstore_state.h$
  @@ -21,7 +21,7 @@$
   #ifndef XENSTORE_STATE_H$
   #define XENSTORE_STATE_H$
   $
  -#if defined(__FreeBSD__) ||M-BM- defined(__NetBSD__)$
  +#if defined(__FreeBSD__) || defined(__NetBSD__)$
   #include <sys/endian.h>$
   #else$
   #include <endian.h>$

A non-breaking space isn't a valid C preprocessor token.

Fixes: ffbb8aa282de ("xenstore: fix build on {Net/Free}BSD")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>