Fix a regression from r151117: ADL requires that we attempt to complete any
associated classes, since it can find friend functions declared within them,
but overload resolution does not otherwise require argument types to be
complete.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151434 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed