IRgen: Switch the C++ mangler interfaces to take the SmallVector to write into,
instead of requiring clients to make a raw_svector_ostream, which is just an
implementation detail.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89548 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 4a30eed..8ba3d32 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -167,8 +167,7 @@
   }
 
   llvm::SmallString<256> Name;
-  llvm::raw_svector_ostream Out(Name);
-  if (!getMangleContext().mangleName(ND, Out)) {
+  if (!getMangleContext().mangleName(ND, Name)) {
     assert(ND->getIdentifier() && "Attempt to mangle unnamed decl.");
     return ND->getNameAsCString();
   }