[PDB] Fix -Wunused-private-field in DIA

llvm-svn: 345054
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
index b89ca9a..bd375e1 100644
--- a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
@@ -428,5 +428,5 @@
   if (!FD)
     return nullptr;
 
-  return llvm::make_unique<DIAEnumFrameData>(*this, FD);
+  return llvm::make_unique<DIAEnumFrameData>(FD);
 }