NCI-Agency/anet#573: Avoid DataCloneError under IE11
NCI-Agency/anet#573: Avoid DataCloneError under IE11

Function name is not available under (webpacked version for) IE11, so if it's a function, just call it.
Fixes NCI-Agency/anet#573

NCI-Agency/anet,NCI-Agency/anet,NCI-Agency/anet,NCI-Agency/anet,NCI-Agency/anet