Fix an warning message in the scanner code.
Fix an warning message in the scanner code.

Change-Id: I4081996333b611afb7b5e0a4626417bdcc1e9f84

angushe/asynchbase,OpenTSDB/asynchbase,hzy001/asynchbase,tsuna/asynchbase,manolama/asynchbase,hhshuai/asynchbase,Connexity/asynchbase,SteamShon/asynchbase,OpenTSDB/asyncbigtable,StumbleUponArchive/asynchbase,OpenTSDB/asynchbase,tsuna/asynchbase,nvoron23/asynchbase,adityakishore/asynchbase,mway08/asynchbase,mway08/asynchbase,pythian/asynchbase,adityakishore/asynchbase,tempbottle/asynchbase,StumbleUponArchive/asynchbase,angushe/asynchbase,Connexity/asynchbase,hhshuai/asynchbase,mapr/asynchbase,hzy001/asynchbase,manolama/asynchbase,Flipboard/asynchbase,Flipboard/asynchbase,manolama/asyncbigtable,yuzhu712/asynchbase,tempbottle/asynchbase,SteamShon/asynchbase,mapr/asynchbase,yuzhu712/asynchbase,nvoron23/asynchbase