base.bbclass: Work even when there's no PNBLACKLIST entries

It turns out that the result of getVarFlags is not a list, it's
a dict. So "getVarFlags(...) or []" does not reliably produce
something with a .items. This escaped detection because our
local build environment never ends up running builds without
PNBLACKLIST entries.

(From OE-Core rev: 491df239170dd20f3e91df6bc1ead2945a78e075)

Signed-off-by: Peter Seebach <peter.seebach@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 840ddbcc93..acc3217b39 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -175,7 +175,7 @@ def preferred_ml_updates(d):
 
     versions = []
     providers = []
-    blacklists = d.getVarFlags('PNBLACKLIST') or []
+    blacklists = d.getVarFlags('PNBLACKLIST') or {}
     for v in d.keys():
         if v.startswith("PREFERRED_VERSION_"):
             versions.append(v)