Rip out the last remaining implicit use of OverloadedFunctionDecl in Sema:
LookupResult::getAsSingleDecl() is no more.  Shift Sema::LookupSingleName to
return null on overloaded results.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90309 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed