Add const qualifier to MadeChanges

Author: Icohedron

llvm/lib/Target/DirectX/DXILOpLowering.cpp

@@ -911,7 +911,7 @@ PreservedAnalyses DXILOpLowering::run(Module &M, ModuleAnalysisManager &MAM) {
   DXILResourceTypeMap &DRTM = MAM.getResult<DXILResourceTypeAnalysis>(M);
   const ModuleMetadataInfo MMDI = MAM.getResult<DXILMetadataAnalysis>(M);
 
-  bool MadeChanges = OpLowerer(M, DRM, DRTM, MMDI).lowerIntrinsics();
+  const bool MadeChanges = OpLowerer(M, DRM, DRTM, MMDI).lowerIntrinsics();
   if (!MadeChanges)
     return PreservedAnalyses::all();
   PreservedAnalyses PA;