[OE-core] [PATCH] license.bbclass: Check if copyfile succeeded with isfile

[Andrei Gherzan]

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.

Signed-off-by: Andrei Gherzan <andrei at gherzan.ro>
---
 meta/classes/license.bbclass |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
index c85233c..6c4a673 100644
--- a/meta/classes/license.bbclass
+++ b/meta/classes/license.bbclass
@@ -215,9 +215,10 @@ python do_populate_lic() {
         if spdx_generic and license_source:
             # we really should copy to generic_ + spdx_generic, however, that ends up messing the manifest
             # audit up. This should be fixed in emit_pkgdata (or, we actually got and fix all the recipes)
-            ret = bb.copyfile(os.path.join(license_source, spdx_generic), os.path.join(os.path.join(d.getVar('LICSSTATEDIR', True), pn), "generic_" + license_type))
+
+            bb.copyfile(os.path.join(license_source, spdx_generic), os.path.join(os.path.join(d.getVar('LICSSTATEDIR', True), pn), "generic_" + license_type))
+            if not os.path.isfile(os.path.join(os.path.join(d.getVar('LICSSTATEDIR', True), pn), "generic_" + license_type)):
             # If the copy didn't occur, something horrible went wrong and we fail out
-            if not ret:
                 bb.warn("%s for %s could not be copied for some reason. It may not exist. WARN for now." % (spdx_generic, pn))
         else:
             # And here is where we warn people that their licenses are lousy
-- 
1.7.5.4