[Skia]: fix TOMBSTONE issue when browsing JPEG image and exiting Gallery

When browsing JPEG image and then exiting Gallery, the TOMBSTONE issue
occour. This is because JPEG Decode method still access a pointer which has been deleted.
This patch can fix it.

Change-Id: I3ac3e4b8f37d352a70676abb6d151961e873e459
Author: Zhongjun Chen <zhongjunx.chen@intel.com>
Signed-off-by: Zhongjun Chen <zhongjunx.chen@intel.com>
Singed-off-by: Shuo Gao <shuo.gao@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 37479
1 file changed