Fix Bug 443805 - ie9 compatibilty: SCRIPT1028: Expected identifier, string or number
Fix Bug 443805 - ie9 compatibilty: SCRIPT1028: Expected identifier, string or number

remove trailing comma in object

Bug 443805

Change-Id: Id930af809cb7074e930081c68e91e2c80715d87b
Signed-off-by: tzihan <e89463597af60c78ca980d828bed4808150b417e@cn.ibm.com>

eclipse/paho.mqtt.javascript,eclipse/paho.mqtt.javascript,eclipse/paho.mqtt.javascript