It is better to init jresp as NULL, and allocate new memory when it is
used, this will avoid the memory leak if the function returns during the
process.
Bug-AGL: SPEC-3584
Change-Id: Icb1eae050294f4438ad89739e324c5483b6b3441 Signed-off-by: Li Xiaoming <lixm.fnst@cn.fujitsu.com>