fix issue

Author: joaosaffran

llvm/lib/Target/DirectX/DXContainerGlobals.cpp

@@ -160,11 +160,9 @@ void DXContainerGlobals::addRootSignature(Module &M,
 
   assert(MMI.EntryPropertyVec.size() == 1);
 
-  auto &RSA = getAnalysis<RootSignatureAnalysisWrapper>().getRSInfo();
   auto &RSA = getAnalysis<RootSignatureAnalysisWrapper>().getRSInfo();
   const Function *EntryFunction = MMI.EntryPropertyVec[0].Entry;
   const auto &RS = RSA.getDescForFunction(EntryFunction);
-  const auto &RS = RSA.getDescForFunction(EntryFunction);
 
   if (!RS)
     return;