Fix bug in tclient.
Fix bug in tclient.

kmiku7/vitess-annotated,dumbunny/vitess,rnavarro/vitess,erzel/vitess,yaoshengzhe/vitess,dcadevil/vitess,ptomasroos/vitess,kmiku7/vitess-annotated,xgwubin/vitess,mahak/vitess,anusornc/vitess,netroby/vitess,tirsen/vitess,cloudbearings/vitess,kuipertan/vitess,kuipertan/vitess,cgvarela/vitess,yangzhongj/vitess,davygeek/vitess,ngaut/vitess,mapbased/vitess,HubSpot/vitess,rnavarro/vitess,dcadevil/vitess,cgvarela/vitess,mapbased/vitess,davygeek/vitess,SDHM/vitess,tirsen/vitess,SDHM/vitess,aaijazi/vitess,guokeno0/vitess,guokeno0/vitess,CERN-Stage-3/vitess,cloudbearings/vitess,ptomasroos/vitess,alainjobart/vitess,applift/vitess,xgwubin/vitess,yaoshengzhe/vitess,tjyang/vitess,HubSpot/vitess,nurblieh/vitess,pivanof/vitess,rnavarro/vitess,tinyspeck/vitess,mahak/vitess,alainjobart/vitess,dumbunny/vitess,enisoc/vitess,skyportsystems/vitess,apmichaud/vitess-apm,sougou/vitess,mattharden/vitess,AndyDiamondstein/vitess,ngaut/vitess,guokeno0/vitess,cgvarela/vitess,aaijazi/vitess,michael-berlin/vitess,enisoc/vitess,pivanof/vitess,netroby/vitess,tjyang/vitess,mahak/vitess,SDHM/vitess,tirsen/vitess,tirsen/vitess,cloudbearings/vitess,applift/vitess,HeisenbergUncertain/vitess,mattharden/vitess,mattharden/vitess,tinyspeck/vitess,tirsen/vitess,mattharden/vitess,anusornc/vitess,AndyDiamondstein/vitess,vitessio/vitess,xgwubin/vitess,yangzhongj/vitess,guokeno0/vitess,nurblieh/vitess,aaijazi/vitess,dumbunny/vitess,applift/vitess,rnavarro/vitess,erzel/vitess,aaijazi/vitess,skyportsystems/vitess,AndyDiamondstein/vitess,yangzhongj/vitess,SDHM/vitess,apmichaud/vitess-apm,atyenoria/vitess,SDHM/vitess,michael-berlin/vitess,applift/vitess,dumbunny/vitess,anusornc/vitess,ptomasroos/vitess,netroby/vitess,aaijazi/vitess,AndyDiamondstein/vitess,atyenoria/vitess,sougou/vitess,alainjobart/vitess,cgvarela/vitess,mlc0202/vitess,michael-berlin/vitess,mattharden/vitess,mapbased/vitess,mapbased/vitess,tjyang/vitess,dumbunny/vitess,HeisenbergUncertain/vitess,tirsen/vitess,mattharden/vitess,skyportsystems/vitess,HeisenbergUncertain/vitess,ptomasroos/vitess,fengshao0907/vitess,vitessio/vitess,dcadevil/vitess,pivanof/vitess,mapbased/vitess,ptomasroos/vitess,anusornc/vitess,anusornc/vitess,mlc0202/vitess,mlc0202/vitess,kuipertan/vitess,davygeek/vitess,kmiku7/vitess-annotated,applift/vitess,SDHM/vitess,kuipertan/vitess,atyenoria/vitess,enisoc/vitess,mahak/vitess,nurblieh/vitess,applift/vitess,michael-berlin/vitess,SDHM/vitess,dumbunny/vitess,guokeno0/vitess,sougou/vitess,ngaut/vitess,fengshao0907/vitess,CERN-Stage-3/vitess,CERN-Stage-3/vitess,kuipertan/vitess,rnavarro/vitess,fengshao0907/vitess,mahak/vitess,mattharden/vitess,erzel/vitess,skyportsystems/vitess,tinyspeck/vitess,pivanof/vitess,yangzhongj/vitess,kuipertan/vitess,yaoshengzhe/vitess,guokeno0/vitess,aaijazi/vitess,tjyang/vitess,cloudbearings/vitess,mlc0202/vitess,tjyang/vitess,tinyspeck/vitess,vitessio/vitess,yaoshengzhe/vitess,mapbased/vitess,pivanof/vitess,pivanof/vitess,mapbased/vitess,atyenoria/vitess,tjyang/vitess,mahak/vitess,rnavarro/vitess,xgwubin/vitess,dcadevil/vitess,dumbunny/vitess,rnavarro/vitess,mattharden/vitess,atyenoria/vitess,cgvarela/vitess,ngaut/vitess,kuipertan/vitess,vitessio/vitess,anusornc/vitess,atyenoria/vitess,guokeno0/vitess,yangzhongj/vitess,HubSpot/vitess,SDHM/vitess,cloudbearings/vitess,mahak/vitess,nurblieh/vitess,mattharden/vitess,AndyDiamondstein/vitess,dumbunny/vitess,xgwubin/vitess,fengshao0907/vitess,davygeek/vitess,tjyang/vitess,cgvarela/vitess,cgvarela/vitess,davygeek/vitess,cloudbearings/vitess,yangzhongj/vitess,applift/vitess,anusornc/vitess,mahak/vitess,sougou/vitess,mapbased/vitess,fengshao0907/vitess,atyenoria/vitess,skyportsystems/vitess,michael-berlin/vitess,tjyang/vitess,ptomasroos/vitess,AndyDiamondstein/vitess,michael-berlin/vitess,pivanof/vitess,mapbased/vitess,netroby/vitess,applift/vitess,kmiku7/vitess-annotated,erzel/vitess,anusornc/vitess,mlc0202/vitess,alainjobart/vitess,erzel/vitess,dcadevil/vitess,xgwubin/vitess,HubSpot/vitess,netroby/vitess,CERN-Stage-3/vitess,fengshao0907/vitess,kmiku7/vitess-annotated,yaoshengzhe/vitess,apmichaud/vitess-apm,erzel/vitess,HubSpot/vitess,atyenoria/vitess,rnavarro/vitess,sougou/vitess,alainjobart/vitess,skyportsystems/vitess,tjyang/vitess,dumbunny/vitess,enisoc/vitess,HubSpot/vitess,HubSpot/vitess,fengshao0907/vitess,sougou/vitess,HeisenbergUncertain/vitess,kmiku7/vitess-annotated,vitessio/vitess,erzel/vitess,vitessio/vitess,apmichaud/vitess-apm,ptomasroos/vitess,kmiku7/vitess-annotated,erzel/vitess,davygeek/vitess,alainjobart/vitess,davygeek/vitess,atyenoria/vitess,yangzhongj/vitess,tirsen/vitess,mapbased/vitess,tinyspeck/vitess,tinyspeck/vitess,yaoshengzhe/vitess,applift/vitess,pivanof/vitess,michael-berlin/vitess,applift/vitess,erzel/vitess,aaijazi/vitess,mattharden/vitess,guokeno0/vitess,michael-berlin/vitess,alainjobart/vitess,sougou/vitess,pivanof/vitess,nurblieh/vitess,mlc0202/vitess,cgvarela/vitess,yaoshengzhe/vitess,AndyDiamondstein/vitess,cloudbearings/vitess,yaoshengzhe/vitess,dumbunny/vitess,vitessio/vitess,anusornc/vitess,skyportsystems/vitess,AndyDiamondstein/vitess,netroby/vitess,kmiku7/vitess-annotated,cloudbearings/vitess,apmichaud/vitess-apm,skyportsystems/vitess,nurblieh/vitess,sougou/vitess,xgwubin/vitess,tinyspeck/vitess,kmiku7/vitess-annotated,SDHM/vitess,tirsen/vitess,nurblieh/vitess,HubSpot/vitess,ngaut/vitess,nurblieh/vitess,mlc0202/vitess,ptomasroos/vitess,dcadevil/vitess,cgvarela/vitess,yaoshengzhe/vitess,kuipertan/vitess,enisoc/vitess,vitessio/vitess,enisoc/vitess,ptomasroos/vitess,nurblieh/vitess,xgwubin/vitess,mlc0202/vitess,erzel/vitess,yangzhongj/vitess,mlc0202/vitess,netroby/vitess,tirsen/vitess,netroby/vitess,yangzhongj/vitess,fengshao0907/vitess,fengshao0907/vitess,xgwubin/vitess,michael-berlin/vitess,aaijazi/vitess,aaijazi/vitess,alainjobart/vitess,cloudbearings/vitess,dcadevil/vitess,netroby/vitess,skyportsystems/vitess,rnavarro/vitess,AndyDiamondstein/vitess,guokeno0/vitess,kuipertan/vitess,enisoc/vitess,CERN-Stage-3/vitess