[LTO] Add a move to inialize member in ctor initialization list (NFC)

llvm-svn: 279210

llvm/lib/LTO/LTO.cpp

@@ -179,7 +179,7 @@ LTO::LTO(Config Conf, ThinBackend Backend,
          unsigned ParallelCodeGenParallelismLevel)
     : Conf(std::move(Conf)),
       RegularLTO(ParallelCodeGenParallelismLevel, this->Conf),
-      ThinLTO(Backend) {}
+      ThinLTO(std::move(Backend)) {}
 
 // Add the given symbol to the GlobalResolutions map, and resolve its partition.
 void LTO::addSymbolToGlobalRes(IRObjectFile *Obj,