use discard instead of remove

Uploads that do not include source would trigger an exception when
remove is used.  discard does not raise an exception when the element
does not exist.

Signed-off-by: Ansgar Burchardt <ansgar@debian.org>

diff --git a/daklib/checks.py b/daklib/checks.py
index adee6241cc6ef9a83cfa1c823984d0a392621eb9..209a0945c14ef950953bab4ca9f4337d8593a08d 100644 (file)
--- a/daklib/checks.py
+++ b/daklib/checks.py
@@ -387,7 +387,7 @@ class ACLCheck(Check):
             raise Reject('Unknown source_acl access level {0} for fingerprint {1}'.format(source_acl.access_level, fingerprint.fingerprint))
 
         bin_architectures = set(upload.changes.architectures)
-        bin_architectures.remove('source')
+        bin_architectures.discard('source')
         binary_acl = fingerprint.binary_acl
         if binary_acl is None:
             if len(bin_architectures) > 0: