Fix possibly null email field in java/zentasks sample
Fix possibly null email field in java/zentasks sample

zaneli/playframework,mkurz/playframework,Shruti9520/playframework,mkurz/playframework,benmccann/playframework,wegtam/playframework,playframework/playframework,Shenker93/playframework,wegtam/playframework,Shruti9520/playframework,richdougherty/playframework,wsargent/playframework,hagl/playframework,ktoso/playframework,richdougherty/playframework,Shruti9520/playframework,rajeshpg/playframework,zaneli/playframework,marcospereira/playframework,ktoso/playframework,aradchykov/playframework,playframework/playframework,aradchykov/playframework,Shenker93/playframework,marcospereira/playframework,zaneli/playframework,wegtam/playframework,rajeshpg/playframework,aradchykov/playframework,ktoso/playframework,wsargent/playframework,Shruti9520/playframework,aradchykov/playframework,benmccann/playframework,Shenker93/playframework,playframework/playframework,marcospereira/playframework,hagl/playframework,rajeshpg/playframework,wsargent/playframework,rajeshpg/playframework,benmccann/playframework,mkurz/playframework,ktoso/playframework,marcospereira/playframework,richdougherty/playframework,wegtam/playframework,mkurz/playframework,benmccann/playframework,wsargent/playframework,Shenker93/playframework,hagl/playframework,hagl/playframework,zaneli/playframework,richdougherty/playframework