res:launcher:: fix image broken problem.

launcher shows broken image when a image is lost.

reason:
the img.onerror is lost.

tower: https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/a49eca9d09e546efb45e9d51af336bb7/

Change-Id: I25f00d4553fa8dd07c346192dc5168a15efc6f1e