add JErrorHandler implementation

Fix missing JErrorHandler constructor & destructor

[GF-3989] sam doc build warning
Open-webOS-DCO-1.0-Signed-off-by: seokjun.lee <sseokjun.lee@lge.com>

Change-Id: I0c2d3a1a0f6808a0314b4d18a89b7e0e12183ea9