While investigating (ab)use of krealloc, David found this bug.  It's
unlikely to occur, but now we detect the condition and error out
appropriately.
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>