Fixed assert checking for unclosed tags.
Fixed assert checking for unclosed tags.

YOTOV-LIMITED/incremental-dom,jridgewell/incremental-dom,PolymerLabs/incremental-dom,Rich-Harris/incremental-dom,markuskobler/incremental-dom,reggi/incremental-dom,google/incremental-dom,paolocaminiti/incremental-dom,paolocaminiti/incremental-dom,markuskobler/incremental-dom,sparhami/incremental-dom,jridgewell/incremental-dom,reggi/incremental-dom,google/incremental-dom,YOTOV-LIMITED/incremental-dom,sparhami/incremental-dom,PolymerLabs/incremental-dom,google/incremental-dom,sparhami/incremental-dom,sparhami/incremental-dom,Rich-Harris/incremental-dom,PolymerLabs/incremental-dom,jridgewell/incremental-dom