tblgen is now passing diagnostic group information in the .inc file, ignore it everywhere.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69269 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/TextDiagnosticPrinter.cpp b/lib/Frontend/TextDiagnosticPrinter.cpp
index 24f66da..9583780 100644
--- a/lib/Frontend/TextDiagnosticPrinter.cpp
+++ b/lib/Frontend/TextDiagnosticPrinter.cpp
@@ -311,7 +311,7 @@
   
   if (PrintDiagnosticOption)
     if (const char *Option = Diagnostic::getWarningOptionForDiag(Info.getID()))
-      OS << " [-" << Option << ']';
+      OS << " [-W" << Option << ']';
   
   OS << '\n';