fix wrong usage of if on download script
fix wrong usage of if on download script

build/configs/artik053/artik053_download.sh: line 61: [: missing `]'

Parkjihooni6186/TizenRT,junmin-kim/TizenRT,sunghan-chang/TizenRT,junmin-kim/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,chanijjani/TizenRT,heejin-kim/TizenRT,yashwanth686007/TizenRTOS,sangwon03/TizenRT,jeongchanKim/TizenRT,shivgarg/TizenRT,olegartys/TizenRT,an4967/TizenRT,HONGCHAEHEE/TizenRT,lssgood/TizenRT,JeongJunSik/TizenRT,youngeunpark/TizenRT,btheosam/TizenRT,dr-venkman/TizenRT,chanijjani/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,chanijjani/TizenRT,EunBongSong/TizenRT,olegartys/TizenRT,youngeunpark/TizenRT,sangwon03/TizenRT,davidfather/TizenRT,btheosam/TizenRT,manoharahk/TizenRT,yashwanth686007/TizenRTOS,youngeunpark/TizenRT,pillip8282/TizenRT,jeongchanKim/TizenRT,HONGCHAEHEE/TizenRT,jeongarmy/TizenRT,an4967/TizenRT,jsdosa/TizenRT,manoharahk/TizenRT,kimusan/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,heejin-kim/TizenRT,manoharahk/TizenRT,lokeshbv/TizenRT,guswns0528/TizenRT,JeonginKim/TizenRT,dr-venkman/TizenRT,an4967/TizenRT,JeongJunSik/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,JeongJunSik/TizenRT,junmin-kim/TizenRT,EunBongSong/TizenRT,an4967/TizenRT,JunhwanPark/TizenRT,lokeshbv/TizenRT,dr-venkman/TizenRT,Samsung/TizenRT,JeonginKim/TizenRT,guswns0528/TizenRT,EunBongSong/TizenRT,youngeunpark/TizenRT,sunghan-chang/TizenRT,sangwon03/TizenRT,sangwon03/TizenRT,pillip8282/TizenRT,pillip8282/TizenRT,davidfather/TizenRT,pillip8282/TizenRT,jsdosa/TizenRT,HONGCHAEHEE/TizenRT,HONGCHAEHEE/TizenRT,lokeshbv/TizenRT,kimusan/TizenRT,dr-venkman/TizenRT,heejin-kim/TizenRT,manoharahk/TizenRT,sangwon03/TizenRT,JunhwanPark/TizenRT,lokeshbv/TizenRT,JunhwanPark/TizenRT,shivgarg/TizenRT,davidfather/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,yashwanth686007/TizenRTOS,shivgarg/TizenRT,Samsung/TizenRT,shivgarg/TizenRT,JeongJunSik/TizenRT,shivgarg/TizenRT,heejin-kim/TizenRT,junmin-kim/TizenRT,lssgood/TizenRT,sangwon03/TizenRT,youngeunpark/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,dr-venkman/TizenRT,btheosam/TizenRT,chanijjani/TizenRT,yashwanth686007/TizenRTOS,JunhwanPark/TizenRT,manoharahk/TizenRT,jeongchanKim/TizenRT,JunhwanPark/TizenRT,EunBongSong/TizenRT,jsdosa/TizenRT,EunBongSong/TizenRT,kimusan/TizenRT,junmin-kim/TizenRT,dr-venkman/TizenRT,manoharahk/TizenRT,olegartys/TizenRT,sunghan-chang/TizenRT,yashwanth686007/TizenRTOS,btheosam/TizenRT,shivgarg/TizenRT,junmin-kim/TizenRT,JeonginKim/TizenRT,chanijjani/TizenRT,davidfather/TizenRT,chanijjani/TizenRT,EunBongSong/TizenRT,HONGCHAEHEE/TizenRT,kimusan/TizenRT,Parkjihooni6186/TizenRT,Samsung/TizenRT,lokeshbv/TizenRT,JeonginKim/TizenRT,chanijjani/TizenRT,btheosam/TizenRT,jeongarmy/TizenRT,HONGCHAEHEE/TizenRT,Parkjihooni6186/TizenRT,Parkjihooni6186/TizenRT,olegartys/TizenRT,olegartys/TizenRT,Parkjihooni6186/TizenRT,Parkjihooni6186/TizenRT,Samsung/TizenRT,yashwanth686007/TizenRTOS,Samsung/TizenRT,JeongJunSik/TizenRT,davidfather/TizenRT,guswns0528/TizenRT,jeongarmy/TizenRT,davidfather/TizenRT,heejin-kim/TizenRT,jeongarmy/TizenRT,JeongJunSik/TizenRT,heejin-kim/TizenRT,guswns0528/TizenRT,olegartys/TizenRT,lokeshbv/TizenRT,kimusan/TizenRT,pillip8282/TizenRT,lssgood/TizenRT,pillip8282/TizenRT,kimusan/TizenRT,JeonginKim/TizenRT,youngeunpark/TizenRT,JeonginKim/TizenRT,lssgood/TizenRT,davidfather/TizenRT,JunhwanPark/TizenRT,an4967/TizenRT,sunghan-chang/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,lssgood/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,btheosam/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,lssgood/TizenRT,Samsung/TizenRT,jsdosa/TizenRT,guswns0528/TizenRT