constraint: tolerate empty lock constraint

2018-03-21 15:43:28 +08:00 · 2018-03-21 15:43:28 +08:00 · 55ba2c2b3c
commit 55ba2c2b3c
parent 827d2c0f96
1 changed files with 1 additions and 1 deletions
--- a/constraint.py
+++ b/constraint.py
@ -463,7 +463,7 @@ class Constraint(ProxyType):

        if not found:
            if not firstInfo:
-                return None
+                return ret
            if utils.isDraftObject(firstInfo.Part):
                Locked.lockElement(firstInfo,solver)
                logger.debug('lock first draft object {}'.format(