Refactor: CheckExplicitInitList is only called to check an entire InitListExpr,
so the Index in/out parameters are pointless (always passed in as 0, always
ignored by the caller).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191103 91177308-0d34-0410-b5e6-96231b3b80d8