fix missing variable declarations
fix missing variable declarations

necessary because the code is run in strict mode.

lodoyun/licode,yangjinecho/licode,lynckia/licode,jcague/licode,jcague/licode,MModal/licode,yangjinecho/licode,lodoyun/licode,lodoyun/licode,jcague/licode,MModal/licode,lynckia/licode,jcague/licode,lodoyun/licode,lodoyun/licode,lynckia/licode,lodoyun/licode,yangjinecho/licode,MModal/licode,lynckia/licode,yangjinecho/licode,MModal/licode,lynckia/licode,yangjinecho/licode,MModal/licode,lynckia/licode,MModal/licode,yangjinecho/licode,MModal/licode,yangjinecho/licode,lodoyun/licode,jcague/licode,jcague/licode,lynckia/licode,yangjinecho/licode,jcague/licode