Differentiate between fn and taskfn in "execute".
This was somehow missed in "fakeroot" handling.
(Bitbake rev: d848bff7cf78f63986467b51f701a998a480eb25)
Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>