[CodeView] Minimal support for S_UNAMESPACE records

Differential Revision: https://reviews.llvm.org/D50007

llvm-svn: 338417
diff --git a/llvm/tools/llvm-pdbutil/MinimalSymbolDumper.cpp b/llvm/tools/llvm-pdbutil/MinimalSymbolDumper.cpp
index b454ab3..f4e38a3 100644
--- a/llvm/tools/llvm-pdbutil/MinimalSymbolDumper.cpp
+++ b/llvm/tools/llvm-pdbutil/MinimalSymbolDumper.cpp
@@ -760,3 +760,9 @@
   P.formatLine("original type = {0}", UDT.Type);
   return Error::success();
 }
+
+Error MinimalSymbolDumper::visitKnownRecord(CVSymbol &CVR,
+                                            UsingNamespaceSym &UN) {
+  P.format(" `{0}`", UN.Name);
+  return Error::success();
+}