minor fix to enable compilation of mel on IRIX64 (medusa)
minor fix to enable compilation of mel on IRIX64 (medusa)

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb