Fix Bug 440126 - errors in user code are swallowed, along with stack traces
Fix Bug 440126 - errors in user code are swallowed, along with stack traces

Change-Id: I44402f8fcd2183d1d8de0b7d4cd8765930a119a9
Signed-off-by: tzihan <e89463597af60c78ca980d828bed4808150b417e@cn.ibm.com>

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