Fixed a compilation warning form console builtin, Fix #259.
Fixed a compilation warning form console builtin, Fix #259.

IoT.js-DCO-1.0-Signed-off-by: Ilyong Cho ily.cho@samsung.com

qdk0901/iotjs,bozzmob/iotjs,wateret/iotjs,qdk0901/iotjs,bozzmob/iotjs,ILyoan/iotjs,wateret/iotjs,lemmaa/iotjs,diorahman/iotjs,ILyoan/iotjs,ILyoan/iotjs,lemmaa/iotjs,wateret/iotjs,diorahman/iotjs,chunseoklee/iotjs,lemmaa/iotjs,bozzmob/iotjs,chunseoklee/iotjs,diorahman/iotjs,chunseoklee/iotjs,qdk0901/iotjs