swift234

merge assignments to UnresolvedDotExpr onto the common path,
this is neutral w.r.t. diagnostics quality, but deletes a ton
of code:

 include/swift/AST/DiagnosticsSema.def |   21 ++---------
 lib/Sema/CSDiag.cpp                   |   64 ++--------------------------------
 2 files changed, 9 insertions(+), 76 deletions(-)



Swift SVN r28956