Fix a bug introduced just now where any non-zero value should result in a blocking snapshot and only 0 should be nonblocking
Fix a bug introduced just now where any non-zero value should result in a blocking snapshot and only 0 should be nonblocking

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