Fix for bug#9166: Cluster compile failure on Solaris 10

ndb/src/common/util/basestring_vsnprintf.c

@@ -14,8 +14,10 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
+#ifdef __sgi
 /* define on IRIX to get posix compliant vsnprintf */
 #define _XOPEN_SOURCE 500
+#endif
 #include <stdio.h>
 #include <basestring_vsnprintf.h>
 #include <my_config.h>