Don't crash when binding a reference to a temporary pointer created from

resolving an overloaded function reference within an initializer list.
Previously we would try to resolve the overloaded function reference without
first stripping off the InitListExpr wrapper.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172517 91177308-0d34-0410-b5e6-96231b3b80d8