PVS-Studio warning V595 for V8

int32_t
NFRule::prefixLength(....) const
{
  ....
  CollationElementIterator* strIter =
    collator->createCollationElementIterator(str);
  ....
  if (collator == NULL || strIter == NULL || prefixIter == NULL)
  ....
}

This suspicious code was found in V8 project by PVS-Studio static code analyzer.
Warning message is:
V595 The 'collator' pointer was utilized before it was verified against nullptr. Check lines: 1142, 1145. nfrule.cpp 1142

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/