Close FD in (unused?) utility method.
Close FD in (unused?) utility method.

ingted/voltdb,zuowang/voltdb,ingted/voltdb,migue/voltdb,creative-quant/voltdb,zuowang/voltdb,migue/voltdb,paulmartel/voltdb,creative-quant/voltdb,deerwalk/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,creative-quant/voltdb,kumarrus/voltdb,flybird119/voltdb,migue/voltdb,simonzhangsm/voltdb,migue/voltdb,kumarrus/voltdb,flybird119/voltdb,kumarrus/voltdb,flybird119/voltdb,kumarrus/voltdb,migue/voltdb,deerwalk/voltdb,flybird119/voltdb,deerwalk/voltdb,zuowang/voltdb,migue/voltdb,creative-quant/voltdb,zuowang/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,ingted/voltdb,flybird119/voltdb,flybird119/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,migue/voltdb,paulmartel/voltdb,zuowang/voltdb,zuowang/voltdb,ingted/voltdb,deerwalk/voltdb,deerwalk/voltdb,deerwalk/voltdb,kumarrus/voltdb,VoltDB/voltdb,kumarrus/voltdb,flybird119/voltdb,VoltDB/voltdb,kumarrus/voltdb,creative-quant/voltdb,ingted/voltdb,ingted/voltdb,flybird119/voltdb,paulmartel/voltdb,paulmartel/voltdb,paulmartel/voltdb,paulmartel/voltdb,creative-quant/voltdb,creative-quant/voltdb,deerwalk/voltdb,zuowang/voltdb,kumarrus/voltdb,zuowang/voltdb,simonzhangsm/voltdb,migue/voltdb,simonzhangsm/voltdb,paulmartel/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,ingted/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,VoltDB/voltdb,ingted/voltdb