Change the Lexer::Diag method to not magically silence warnings,
force the caller to check instead.  This eliminates the need (and the
risk!) of weird null DiagnosticBuilder's floating around.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59856 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed