Fix for a really annoying compiler warning.
Fix for a really annoying compiler warning.

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