Fix for issue https://github.com/google/blockly/issues/210
Fix for issue https://github.com/google/blockly/issues/210

HALtheWise/blockly,Tinkerforge/tvpl-blockly,trinketapp/blockly,picklesrus/blockly,OpenRoberta/blockly,twodee/blockly,gupta137/blockly,cmillani/blockly,nickmain/blockly,drigz/blockly,daarond/blockly,drigz/blockly,sclements/scratch-blocks,mark-friedman/blockly,CocoMake7/CocoBlockly,InspectorWidget/blockly,edbutler/blockly,twodee/blockly,markocelan/blockly-minecraft,carlosperate/blockly,griffpatch/scratch-blocks,HALtheWise/blockly,sclements/scratch-blocks,stefan-j/blockly,groklearning/blockly,nickmain/blockly,ralic/blockly,jano42/blockly,jstnhuang/blockly,hkoi/blockly,dhalupa/blockly,sclements/scratch-blocks,LLK/scratch-blocks,rachel-fenichel/blockly,cmillani/blockly,gupta137/blockly,twodee/blockly,mark-friedman/blockly,hkoi/blockly,stefan-j/blockly,rachel-fenichel/blockly,jano42/blockly,lzairdking/blockly,trinketapp/blockly,RealTimeWeb/blockly,groklearning/blockly,TechplexEngineer/blockly,trinketapp/blockly,CocoMake7/CocoBlockly,mark-friedman/blockly,Tinkerforge/tvpl-blockly,griffpatch/scratch-blocks,carloslfu/blockly,mark-friedman/blockly,LLK/scratch-blocks,rachel-fenichel/blockly,stefan-j/blockly,gengshenghong/scratch-blocks,rachel-fenichel/blockly,griffpatch/scratch-blocks,aravart/speech-blocks,google/blockly,gengshenghong/scratch-blocks,edbutler/blockly,ralic/blockly,aravart/speech-blocks,TechplexEngineer/blockly,Tinkerforge/tvpl-blockly,trodi/blockly,LLK/scratch-blocks,rachel-fenichel/blockly,twodee/blockly,dhalupa/blockly,nickmain/blockly,carlosperate/blockly,rachel-fenichel/blockly,griffpatch/scratch-blocks,carlosperate/ardublockly,ralic/blockly,jano42/blockly,sclements/scratch-blocks,twodee/blockly,marianoguerra/blockly,carlosperate/blockly,jstnhuang/blockly,lzairdking/blockly,OpenRoberta/blockly,daarond/blockly,dhalupa/blockly,stefan-j/blockly,trodi/blockly,groklearning/blockly,marianoguerra/blockly,jstnhuang/blockly,gengshenghong/scratch-blocks,joshlory/blockly,trodi/blockly,carlosperate/ardublockly,groklearning/blockly,edbutler/blockly,joshlory/blockly,google/blockly,carloslfu/blockly,picklesrus/blockly,lzairdking/blockly,jano42/blockly,google/blockly,OpenRoberta/blockly,marianoguerra/blockly,google/blockly,carloslfu/blockly,picklesrus/blockly,mark-friedman/blockly,gengshenghong/scratch-blocks,google/blockly,markocelan/blockly-minecraft,google/blockly-devtools,hkoi/blockly,markocelan/blockly-minecraft,cmillani/blockly,nickmain/blockly,griffpatch/scratch-blocks,gengshenghong/scratch-blocks,twodee/blockly,RealTimeWeb/blockly,carlosperate/ardublockly,InspectorWidget/blockly,nickmain/blockly,joshlory/blockly,LLK/scratch-blocks,RealTimeWeb/blockly,drigz/blockly,markocelan/blockly-minecraft,lzairdking/blockly,rachel-fenichel/blockly,google/blockly-devtools,CocoMake7/CocoBlockly,OpenRoberta/blockly,carlosperate/blockly,HALtheWise/blockly,daarond/blockly,google/blockly,nickmain/blockly,trinketapp/blockly,LLK/scratch-blocks,jstnhuang/blockly,trodi/blockly,mark-friedman/blockly,google/blockly,sclements/scratch-blocks,gupta137/blockly,InspectorWidget/blockly