os/net/netdev: Malloc size bug fix in copy_addrinfo
os/net/netdev: Malloc size bug fix in copy_addrinfo

- Replace sizeof((char *)x) to strlen(x)

jeongarmy/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,pillip8282/TizenRT,jeongchanKim/TizenRT,jsdosa/TizenRT,davidfather/TizenRT,davidfather/TizenRT,davidfather/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,chanijjani/TizenRT,chanijjani/TizenRT,pillip8282/TizenRT,an4967/TizenRT,an4967/TizenRT,an4967/TizenRT,davidfather/TizenRT,jeongarmy/TizenRT,Samsung/TizenRT,Samsung/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,jsdosa/TizenRT,chanijjani/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,sunghan-chang/TizenRT,jeongarmy/TizenRT,jeongarmy/TizenRT,junmin-kim/TizenRT,jeongarmy/TizenRT,junmin-kim/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,chanijjani/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,chanijjani/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,davidfather/TizenRT,an4967/TizenRT,Samsung/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,chanijjani/TizenRT,junmin-kim/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,chanijjani/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,sunghan-chang/TizenRT,sunghan-chang/TizenRT,Samsung/TizenRT,jsdosa/TizenRT,davidfather/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,sunghan-chang/TizenRT,davidfather/TizenRT,jeongchanKim/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,jeongchanKim/TizenRT