[#2080] fix compiler warning on centos5
[#2080] fix compiler warning on centos5

PaulVanSchayck/irods,janiheikkinen/irods,leesab/irods,janiheikkinen/irods,PaulVanSchayck/irods,janiheikkinen/irods,janiheikkinen/irods,PaulVanSchayck/irods,janiheikkinen/irods,janiheikkinen/irods,leesab/irods,PaulVanSchayck/irods,PaulVanSchayck/irods,leesab/irods,leesab/irods,PaulVanSchayck/irods,PaulVanSchayck/irods,leesab/irods,janiheikkinen/irods,PaulVanSchayck/irods,leesab/irods,PaulVanSchayck/irods,janiheikkinen/irods,janiheikkinen/irods,leesab/irods