Keep track of whether a type parameter is actually a type parameter pack.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73261 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclPrinter.cpp b/lib/AST/DeclPrinter.cpp
index f231abf..2b06e93 100644
--- a/lib/AST/DeclPrinter.cpp
+++ b/lib/AST/DeclPrinter.cpp
@@ -527,6 +527,9 @@
       else
         Out << "class ";
 
+      if (TTP->isParameterPack())
+        Out << "... ";
+      
       Out << ParamType.getAsString(Policy);
 
       if (TTP->hasDefaultArgument()) {