A cleaner way to check if copyfile suceeded is to use os.path.isfile.
In this way we can omit warns in some python versions where copyfile
return the same non-0 value even is this action is successfull.
(From OE-Core rev: fa51fe19a1dc1ddc4c9ec879a782953fd6a15117)
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>