Some intermittent failures in valgrind are hard
reproduce.
Printing the difference between actual and expected
will make understanding them slightly easier.
[YOCTO #14294]
(From OE-Core rev: 099313ef541920d4a84b801d9d8788a56ba7ec61)
Signed-off-by: Yi Fan Yu <yifan.yu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>