fix correcting associated items (#1778)
fix correcting associated items (#1778)

when PUBLISH_ASSOCITED_ITEMS is on. it was using previous
item instead of current one when publishing correction.

SDESK-4945
petrjasek/superdesk-core,superdesk/superdesk-core,superdesk/superdesk-core,superdesk/superdesk-core,petrjasek/superdesk-core,superdesk/superdesk-core,petrjasek/superdesk-core,petrjasek/superdesk-core