Base SFINAE error suppression counting on the class of an error, not
its (possibly-remapped) diagnostics. Thanks, Chris!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73390 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Diagnostic.cpp b/lib/Basic/Diagnostic.cpp
index 323f7a7..78b8b0a 100644
--- a/lib/Basic/Diagnostic.cpp
+++ b/lib/Basic/Diagnostic.cpp
@@ -118,7 +118,7 @@
 
 bool Diagnostic::isBuiltinSFINAEDiag(unsigned DiagID) {
   if (const StaticDiagInfoRec *Info = GetDiagInfo(DiagID))
-    return Info->SFINAE && Info->Class != CLASS_NOTE;
+    return Info->SFINAE && Info->Class == CLASS_ERROR;
   return false;
 }